UI/FormRegionPrivacyStatus.cs
author Dean
Mon, 26 Sep 2016 09:45:37 +0200
changeset 1310 df58041861a5
parent 1307 fb31954ed91c
child 1318 8c4c8f03db0e
permissions -rw-r--r--
Use color instead of comm_type to determine when to reset key trust.
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´╗┐using pEp.UI;
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using pEpCOMServerAdapterLib;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Forms;
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using System.Windows.Media.Imaging;
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using Outlook = Microsoft.Office.Interop.Outlook;
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namespace pEp
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{
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    /// <summary>
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    /// Partial class for the privacy status form region that is displayed below every outlook message.
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    /// </summary>
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    internal partial class FormRegionPrivacyStatus
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    {
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        #region Form Region Factory
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        [Microsoft.Office.Tools.Outlook.FormRegionMessageClass(Microsoft.Office.Tools.Outlook.FormRegionMessageClassAttribute.Note)]
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        [Microsoft.Office.Tools.Outlook.FormRegionName("pEp.FormRegionPrivacyStatus")]
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        public partial class FormRegionPrivacyStatusFactory
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        {
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            // Occurs before the form region is initialized.
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            // To prevent the form region from appearing, set e.Cancel to true.
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            // Use e.OutlookItem to get a reference to the current Outlook item.
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            private void FormRegionPrivacyStatus_FormRegionInitializing(object sender, Microsoft.Office.Tools.Outlook.FormRegionInitializingEventArgs e)
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            {
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                Outlook.MailItem omi;
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                try
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                {
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                    omi = (Outlook.MailItem)e.OutlookItem;
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                }
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                catch
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                {
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                    // Never load if it's not a MailItem
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                    e.Cancel = true;
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                    return;
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                }
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                // Do not load if pEp is disabled
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                e.Cancel = (omi.GetIsInPEPEnabledStore() == false);
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                //WindowFormRegionCollection formRegions;
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                /* There is a Microsoft bug at least in Outlook 2013 and Windows 8.1
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                 * This bug causes multiple PrivacyStatus form regions to appear stacked on top of each other.
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                 * To trigger this bug, on an unencrypted server, click reply to compose an in-line response.
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                 * Then click to another tab such as People or Tasks. Then click back on the mail tab to view 
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                 * the original email again. Two form regions will be visible: 
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                 * (1) for the status during the in-line reply and 
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                 * (2) for the status of only the received message.
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                 * 
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                 * To fix this bug, any existing form regions are found and closed when initializing a new privacy status
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                 * form region.
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                 */
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                /*
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                try
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                {
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                    formRegions = Globals.FormRegions[Globals.ThisAddIn.Application.ActiveWindow()];
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                    if (formRegions.FormRegionPrivacyStatus != null)
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                    {
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                        // Note: there seems to be no way to actually close the form region.
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                        // Therefore, this is as close as possible to actually closing it.
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                        // The actual form regions will be cleaned up as soon as another email is selected.
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                        formRegions.FormRegionPrivacyStatus.OutlookFormRegion.Visible = false;
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                    }
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                }
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                catch { }
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                */
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                return;
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            }
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        }
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        #endregion
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        /* Notes:
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         * 
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         * Use this.OutlookItem to get a reference to the current Outlook item.
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         * Use this.OutlookFormRegion to get a reference to the form region.
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         * 
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         * UI State Managment:
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         * 
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         * The UI state is almost entirely set from the associated mail item data.
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         * However, a separate state class is maintained to represent the UI as some separation is needed.
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         * This logical separation MUST be maintained throughout the code.
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         * Specific cases are noted where possible.
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         * 
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         * The separate privacy status manager form state is also managed here.
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         * 
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         */
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        private CryptableMailItem       associatedMailItem     = null;
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        private bool                    initialized            = false;
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        private FormManagePrivacyStatus managerForm            = null;
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        private bool                    refreshOngoing         = false;
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        private bool                    displayMirrorRequested = false;
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        /**************************************************************
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         * 
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         * Methods
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         * 
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         *************************************************************/
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        /// <summary>
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        /// Determines if this form region is running in an inspector window.
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        /// If not true, it is assumed to be within an explorer window.
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        /// </summary>
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        /// <returns>True if an inspector window, false if within an explorer.</returns>
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        private bool IsWithinInspector()
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        {
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            bool isWithinInspector = false;
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            Outlook.Inspector insp = null;
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            try
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            {
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                /* There are two potential methods to determine if the item is within an inspector.
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                 * (1) Use this.OutlookFormRegion.Parent which will contain either the Explorer or an Inspector
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                 *     A cast could be tried to an Explorer of this parent and if it fails, it's assumed to be an inspector
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                 * (2) Use this.OutlookFormRegion.Inspector which will contain the Inspector if it exists.
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                 *     This will fail or return null if this form region is not running within it's own Inspector window.
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                 */
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                insp = this.OutlookFormRegion.Inspector;
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                if (insp != null)
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                {
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                    isWithinInspector = true;
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                }
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            }
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            catch
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            {
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                isWithinInspector = false;
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            }
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            finally
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            {
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                if (insp != null)
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                {
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                    Marshal.ReleaseComObject(insp);
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                    insp = null;
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                }
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            }
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            return (isWithinInspector);
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        }
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        /// <summary>
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        /// Sets the cryptable mail item associated with this encryption status panel.
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        /// The associated mail item can then be accessed through its local variable.
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        /// </summary>
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        private void SetAssociatedMailItem()
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        {
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            bool errorOccurred = false;
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            Outlook.MailItem omi = null;
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            // Null check
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            if (!errorOccurred)
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            {
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                try
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                {
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                    if (this.OutlookItem == null)
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                    {
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                        errorOccurred = true;
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                    }
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                }
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                catch
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                {
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                    errorOccurred = true;
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                }
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            }
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            // Attempt to get and cast the outlook mail item
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            if (!errorOccurred)
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            {
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                try
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                {
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                    omi = (Outlook.MailItem)this.OutlookItem;
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                }
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                catch
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                {
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                    errorOccurred = true;
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                }
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            }
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            // Finally set the associated mail item
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            if ((errorOccurred) ||
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                (omi == null))
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            {
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                this.associatedMailItem = null;
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            }
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            else
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            {
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                // Check if the associated mail item has already been set
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                if (this.associatedMailItem != null)
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                {
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                    // Only re-set the mail item if the EntryID has changed
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                    if (this.associatedMailItem.EntryID != omi.EntryID)
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                    {
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                        this.associatedMailItem = new CryptableMailItem(omi);
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                    }
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                }
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                else
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                {
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                    this.associatedMailItem = new CryptableMailItem(omi);
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                }
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            }
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            return;
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        }
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        /// <summary>
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        /// Completes the handshake process when the identity of a partner was previously marked as mistrusted.
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        /// </summary>
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        /// <param name="myself">The personal identity to complete the handshake with.</param>
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        /// <param name="partner">The identity of the partner to complete the handshake with.</param>
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        private void DoHandshakeForMistrustedKey(PEPIdentity myself,
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                                                 PEPIdentity partner)
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        {
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            DialogResult result;
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            result = System.Windows.Forms.MessageBox.Show(this.ParentForm,
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                                                          pEp.Properties.Resources.Message_WarningMistrustedKey,
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                                                          pEp.Properties.Resources.Message_TitleConfirmOperation,
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                                                          MessageBoxButtons.YesNo,
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                                                          MessageBoxIcon.Warning);
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            if (result == DialogResult.Yes)
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            {
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                this.DoHandshake(myself, partner);
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            }
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            return;
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        }
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        /// <summary>
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        /// Completes the handshake process where the identity of a partner is confirmed.
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        /// </summary>
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        /// <param name="myself">The personal identity to complete the handshake with.</param>
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        /// <param name="partner">The identity of the partner to complete the handshake with.</param>
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        private void DoHandshake(PEPIdentity myself,
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                                 PEPIdentity partner)
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        {
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            DialogResult result;
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            FormHandshake handshakeDialog;
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            Log.Verbose("DoHandshake: Handshake started.");
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            // Create and show handshake dialog
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            handshakeDialog = new FormHandshake();
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            handshakeDialog.StartPosition = FormStartPosition.CenterParent;
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            handshakeDialog.FormControl.DisplayState = new FormControlHandshake.State(myself,
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                                                                                      partner,
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                                                                                      Globals.ThisAddIn.Settings.TrustwordsCulture);
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            result = handshakeDialog.ShowDialog(this);
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            this.ProcessDoHandshakeResult(result, partner);
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            return;
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        }
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        /// <summary>
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        /// Processes the result of the do handshake dialog after a user makes a selection.
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        /// </summary>
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        /// <param name="result">The result of the handshake dialog selection.</param>
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        /// <param name="partner">The identity of the partner to handshake with.</param>
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        private void ProcessDoHandshakeResult(DialogResult result,
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                                              PEPIdentity partner)
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        {
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            _pEp_color partnerIdentityRating;
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            PrivacyState.PrivacyColor partnerIdentityColor;
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            pEp_identity_s identityPartner = ThisAddIn.PEPEngine.update_identity(partner.ToCOMType());
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            switch (result)
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            {
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                case DialogResult.Yes:
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                    {
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                        // Get the rating/color to determine if key was previously mistrusted -- warning to user must be displayed earlier
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                        try
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                        {
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                            partnerIdentityRating = ThisAddIn.PEPEngine.identity_color(identityPartner);
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                        }
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                        catch (COMException ex)
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                        {
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                            partnerIdentityRating = _pEp_color.pEp_rating_undefined;
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                            Log.Warning("ProcessDoHandshakeResult: Failed to get identity rating, " + ex.ToString());
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                        }
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                        partnerIdentityColor = PrivacyState.ConvertRatingToColor(partnerIdentityRating);
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                        // Process result
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                        try
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                        {
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                            if (partnerIdentityColor == PrivacyState.PrivacyColor.Red)
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                            {
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                                ThisAddIn.PEPEngine.key_reset_trust(ref identityPartner);
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                            }
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                            identityPartner = ThisAddIn.PEPEngine.trust_personal_key(ref identityPartner);
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                        }
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                        catch (Exception ex)
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                        {
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                            Log.Error("ProcessDoHandshakeResult: Error occured while trying to set trust: " + ex.ToString());
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                        }
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                        this.ImmediateRatingAndUIUpdate();
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                        this.UpdateManagePrivacyStatusForm();
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                        break;
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                    }
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                case DialogResult.No:
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                    {
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                        try
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                        {
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                            ThisAddIn.PEPEngine.key_compromized(ref identityPartner);
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                        }
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                        catch (Exception ex)
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                        {
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                            Log.Error("ProcessDoHandshakeResult: Error occured while trying to mistrust key: " + ex.ToString());
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                        }
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                        this.ImmediateRatingAndUIUpdate();
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                        this.UpdateManagePrivacyStatusForm();
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                        break;
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                    }
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            }
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            Log.Verbose("ProcessDoHandshakeResult: Handshake complete.");
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            return;
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        }
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        /// <summary>
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        /// Reverses any past handshake confirmation by unconfirming the given identity partner.
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        /// </summary>
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        /// <param name="partner">The identity of the partner to unconfirm.</param>
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        private void UndoHandshake(PEPIdentity partner)
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        {
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            pEp_identity_s identityPartner = ThisAddIn.PEPEngine.update_identity(partner.ToCOMType());
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            ThisAddIn.PEPEngine.key_reset_trust(ref identityPartner);
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            this.ImmediateRatingAndUIUpdate();
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            this.UpdateManagePrivacyStatusForm();
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            return;
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        }
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        /// <summary>
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        /// Builds a new manager form state using this encryption state/mail item current state.
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        /// </summary>
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        /// <returns>A new manager form state.</returns>
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        private FormControlManagePrivacyStatus.State GetManagerState()
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        {
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            int currIndex = 0;
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            bool isMyself;
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            string trustwordsShort;
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            string trustwordsFull;
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            BitmapImage imageForceUnencOn;
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            BitmapImage imageGreen;
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            BitmapImage imageNoColor;
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            BitmapImage imageRed;
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            BitmapImage imageYellow;
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            List<PEPIdentity> identities;
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            PEPIdentity identity;
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            PEPIdentity myIdentity;
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            _pEp_color partnerIdentityRating;
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            PrivacyState.PrivacyColor partnerIdentityColor;
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            SelectionItem item;
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            FormControlManagePrivacyStatus.State managerState = new FormControlManagePrivacyStatus.State();
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            if (this.associatedMailItem != null)
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            {
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                // Load all images from resources
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                imageForceUnencOn = new BitmapImage(new Uri("pack://application:,,,/pEp;component/Resources/ImageForceUnencOn.png", UriKind.RelativeOrAbsolute));
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                imageGreen = new BitmapImage(new Uri("pack://application:,,,/pEp;component/Resources/ImagePrivacyStatusGreen.png", UriKind.RelativeOrAbsolute));
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                imageNoColor = new BitmapImage(new Uri("pack://application:,,,/pEp;component/Resources/ImagePrivacyStatusNoColor.png", UriKind.RelativeOrAbsolute));
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                imageRed = new BitmapImage(new Uri("pack://application:,,,/pEp;component/Resources/ImagePrivacyStatusRed.png", UriKind.RelativeOrAbsolute));
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                imageYellow = new BitmapImage(new Uri("pack://application:,,,/pEp;component/Resources/ImagePrivacyStatusYellow.png", UriKind.RelativeOrAbsolute));
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                /* Resolve all recipients -- this ensures the identities list is correctly populated
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                 *
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                 * Note: The PropertyChanged changed event must be disconnected before trying to resolve.
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                 * This is because the resolve process can modify the contents of the mail item which triggers an event.
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                 * The PropertyChanged event would then trigger a UI refresh cycle. However, because the GetManagerState itself 
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                 * is called within the UI refresh, an infinite loop could occur trying to resolve a recipient that 
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                 * cannot be resolved (no address).
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                 */
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                this.associatedMailItem.PropertyChanged -= MailItem_PropertyChanged;
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                this.associatedMailItem.ResolveAllRecipients();
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                this.associatedMailItem.PropertyChanged += MailItem_PropertyChanged;
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                managerState.Rating = this.FormControlPrivacyStatusChild.DisplayState.Rating;
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                managerState.IsIncoming = this.associatedMailItem.IsIncoming;
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                // Get identities
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                identities = this.associatedMailItem.Recipients;
Dean@1298
   399
                myIdentity = this.associatedMailItem.Myself;
Dean@1106
   400
Dean@1298
   401
                // Include the from identity for incoming messages at the beginning
Dean@1298
   402
                identity = this.associatedMailItem.From;
Dean@1298
   403
                if ((this.associatedMailItem.IsIncoming) &&
Dean@1298
   404
                    (identity != null))
Dean@1298
   405
                {
Dean@1298
   406
                    identities.Insert(0, identity);
Dean@1298
   407
                }
Dean@259
   408
Dean@1298
   409
                // Remove own identity in the MailItem from the list
Dean@1298
   410
                if (myIdentity != null)
Dean@638
   411
                {
Dean@1298
   412
                    for (int i = (identities.Count - 1); i >= 0; i--)
Dean@1106
   413
                    {
Dean@1298
   414
                        if ((identities[i] != null) &&
Dean@1298
   415
                            (identities[i].EqualsByAddress(myIdentity)))
Dean@1298
   416
                        {
Dean@1298
   417
                            identities.RemoveAt(i);
Dean@1298
   418
                        }
Dean@1106
   419
                    }
Dean@638
   420
                }
Dean@366
   421
Dean@1298
   422
                // Add identities
Dean@1298
   423
                identities = PEPIdentity.ToFlatList(identities);
Dean@1298
   424
                managerState.Identities.Clear();
Dean@1298
   425
                foreach (PEPIdentity ident in identities)
Dean@1298
   426
                {
Dean@1298
   427
                    // Needed so index can be used within anonymous methods without getting into the 'outer variable trap' of currIndex
Dean@1298
   428
                    int index = currIndex;
Dean@737
   429
Dean@1298
   430
                    if (ident.IsAddressValid)
Dean@1298
   431
                    {
Dean@1298
   432
                        // Update the partner identity to get a fingerprint, preserve IsForceUnencrypted
Dean@1298
   433
                        pEp_identity_s partnerIdentity_s = ThisAddIn.PEPEngine.update_identity(ident.ToCOMType());
Dean@1298
   434
                        PEPIdentity partnerIdentity = new PEPIdentity(partnerIdentity_s);
Dean@1298
   435
                        partnerIdentity.IsForceUnencrypted = ident.IsForceUnencrypted;
Dean@774
   436
Dean@1298
   437
                        try
Dean@1298
   438
                        {
Dean@1298
   439
                            partnerIdentityRating = ThisAddIn.PEPEngine.identity_color(partnerIdentity_s);
Dean@1298
   440
                        }
Dean@1298
   441
                        catch (COMException ex)
Dean@1298
   442
                        {
Dean@1298
   443
                            partnerIdentityRating = _pEp_color.pEp_rating_undefined;
Dean@1298
   444
                            Log.Warning("GetManagerState: Failed to get identity rating, " + ex.ToString());
Dean@1298
   445
                        }
Dean@1298
   446
                        partnerIdentityColor = PrivacyState.ConvertRatingToColor(partnerIdentityRating);
Dean@1018
   447
Dean@1298
   448
                        isMyself = PEPIdentity.GetIsOwnIdentity(partnerIdentity.Address);
Dean@724
   449
Dean@1298
   450
                        // Calculate trustwords
Dean@1298
   451
                        Globals.ThisAddIn.CalcTrustwords(myIdentity,
Dean@1298
   452
                                                         partnerIdentity,
Dean@1298
   453
                                                         out trustwordsShort,
Dean@1298
   454
                                                         out trustwordsFull,
Dean@1298
   455
                                                         Globals.ThisAddIn.Settings.TrustwordsCulture?.TwoLetterISOLanguageName);
Dean@880
   456
Dean@1298
   457
                        item = new SelectionItem();
Dean@1298
   458
                        item.TextLine1 = partnerIdentity.Username;
Dean@1298
   459
                        item.TextLine2 = partnerIdentity.Address;
Dean@1298
   460
                        item.Tag = (string.IsNullOrWhiteSpace(partnerIdentity.Fingerprint) ? null : trustwordsShort);
Dean@259
   461
Dean@1298
   462
                        // Don't show both the user name and address if they are the same
Dean@1298
   463
                        if ((item.TextLine1 != null) &&
Dean@1298
   464
                            (item.TextLine2 != null) &&
Dean@1298
   465
                            (item.TextLine1 == item.TextLine2))
Dean@1298
   466
                        {
Dean@1298
   467
                            item.IsTwoTextLinesVisible = false;
Dean@1298
   468
                        }
Dean@332
   469
Dean@1298
   470
                        // Set image
Dean@1298
   471
                        if ((partnerIdentity.IsForceUnencryptedBool) &&
Dean@1298
   472
                            (managerState.IsIncoming == false))
Dean@641
   473
                        {
Dean@1298
   474
                            item.ItemImage = imageForceUnencOn;
Dean@641
   475
                        }
Dean@1298
   476
                        else
Dean@1298
   477
                        {
Dean@1298
   478
                            switch (partnerIdentityColor)
Dean@1298
   479
                            {
Dean@1298
   480
                                case PrivacyState.PrivacyColor.Green:
Dean@1298
   481
                                    item.ItemImage = imageGreen;
Dean@1298
   482
                                    break;
Dean@1298
   483
                                case PrivacyState.PrivacyColor.Yellow:
Dean@1298
   484
                                    item.ItemImage = imageYellow;
Dean@1298
   485
                                    break;
Dean@1298
   486
                                case PrivacyState.PrivacyColor.Red:
Dean@1298
   487
                                    item.ItemImage = imageRed;
Dean@1298
   488
                                    break;
Dean@1298
   489
                                case PrivacyState.PrivacyColor.NoColor:
Dean@1298
   490
                                    item.ItemImage = imageNoColor;
Dean@1298
   491
                                    break;
Dean@1298
   492
                                default:
Dean@1298
   493
                                    item.ItemImage = null;
Dean@1298
   494
                                    break;
Dean@1298
   495
                            }
Dean@1298
   496
                        }
Dean@259
   497
Dean@1298
   498
                        // Set button
Dean@1298
   499
                        if ((isMyself) ||
Dean@1298
   500
                            ((partnerIdentity.IsForceUnencryptedBool) &&
Dean@1298
   501
                             (managerState.IsIncoming == false)))
Dean@485
   502
                        {
Dean@1298
   503
                            item.IsButtonVisible = false;
Dean@641
   504
                            item.IsExpandable = false;
Dean@485
   505
                        }
Dean@485
   506
                        else
Dean@485
   507
                        {
Dean@1298
   508
                            if (partnerIdentityColor == PrivacyState.PrivacyColor.Green)
Dean@1298
   509
                            {
Dean@1298
   510
                                // Undo handshake
Dean@1298
   511
                                item.TextButton = pEp.Properties.Resources.PrivacyStatus_StopTrusting;
Dean@1298
   512
                                item.IsButtonVisible = true;
Dean@1298
   513
                                item.ButtonOnClick = (x, y) => { this.UndoHandshake(partnerIdentity.Copy()); };
Dean@1298
   514
Dean@1298
   515
                                item.IsExpandable = false;
Dean@1298
   516
                            }
Dean@1298
   517
                            else if (partnerIdentityColor == PrivacyState.PrivacyColor.Yellow)
Dean@1298
   518
                            {
Dean@1298
   519
                                // Do handshake
Dean@1298
   520
                                item.TextButton = pEp.Properties.Resources.PrivacyStatus_Handshake;
Dean@1298
   521
                                item.IsButtonVisible = true;
Dean@1298
   522
                                item.ButtonOnClick = (x, y) => { this.DoHandshake(myIdentity.Copy(), partnerIdentity.Copy()); };
Dean@1298
   523
Dean@1298
   524
                                item.IsExpandable = true;
Dean@1298
   525
                                item.ExpandedText = pEp.Properties.Resources.Handshake_ConfirmTrustwordsText + "\n\n" +
Dean@1298
   526
                                                    trustwordsShort;
Dean@1298
   527
Dean@1298
   528
                                item.ExpandedButton1Text = pEp.Properties.Resources.Handshake_ConfirmText;
Dean@1298
   529
                                item.ExpandedButton1OnClick = (x, y) => { this.ProcessDoHandshakeResult(DialogResult.Yes, partnerIdentity.Copy()); };
Dean@1298
   530
                                item.ExpandedButton1Style = (Style)Globals.ResourceDict["StyleConfirmButton"];
Dean@1298
   531
Dean@1298
   532
                                item.ExpandedButton2Text = pEp.Properties.Resources.Handshake_CancelText;
Dean@1298
   533
                                item.ExpandedButton2OnClick = (x, y) =>
Dean@1298
   534
                                    {
Dean@1298
   535
                                        SelectionItem selItem;
Dean@1298
   536
                                        FormControlManagePrivacyStatus.State activeState;
Dean@1298
   537
Dean@1298
   538
                                        if (this.managerForm != null)
Dean@1298
   539
                                        {
Dean@1298
   540
                                            activeState = this.managerForm.FormControl.DisplayState;
Dean@1298
   541
Dean@1298
   542
                                            if ((index >= 0) &&
Dean@1298
   543
                                                (index < activeState.Identities.Count))
Dean@1298
   544
                                            {
Dean@1298
   545
                                                selItem = activeState.Identities[index];
Dean@1298
   546
                                                selItem.TextButton = pEp.Properties.Resources.PrivacyStatus_Handshake;
Dean@1298
   547
                                                selItem.IsExpanded = false;
Dean@1298
   548
                                                selItem.IsExpandable = false;
Dean@1298
   549
                                            }
Dean@1298
   550
                                        }
Dean@1298
   551
                                    };
Dean@1298
   552
                                item.ExpandedButton2Style = (Style)Globals.ResourceDict["StyleCancelButton"];
Dean@1298
   553
Dean@1298
   554
                                item.ExpandedButton3Text = pEp.Properties.Resources.Handshake_WrongText;
Dean@1298
   555
                                item.ExpandedButton3OnClick = (x, y) => { this.ProcessDoHandshakeResult(DialogResult.No, partnerIdentity.Copy()); };
Dean@1298
   556
                                item.ExpandedButton3Style = (Style)Globals.ResourceDict["StyleWrongButton"];
Dean@1298
   557
                            }
Dean@1298
   558
                            else if (partnerIdentityColor == PrivacyState.PrivacyColor.Red)
Dean@1298
   559
                            {
Dean@1298
   560
                                // Redo handshake with confirmation
Dean@1298
   561
                                item.TextButton = pEp.Properties.Resources.PrivacyStatus_Handshake;
Dean@1298
   562
                                item.IsButtonVisible = true;
Dean@1298
   563
                                item.ButtonOnClick = (x, y) => { this.DoHandshakeForMistrustedKey(myIdentity.Copy(), partnerIdentity.Copy()); };
Dean@1298
   564
Dean@1298
   565
                                item.IsExpandable = false;
Dean@1298
   566
                            }
Dean@1298
   567
                            else
Dean@1298
   568
                            {
Dean@1298
   569
                                item.IsButtonVisible = false;
Dean@1298
   570
                                item.IsExpandable = false;
Dean@1298
   571
                            }
Dean@485
   572
                        }
Dean@366
   573
                    }
Dean@1298
   574
                    else // Invalid identity
Dean@1298
   575
                    {
Dean@1298
   576
                        item = new SelectionItem();
Dean@1298
   577
                        item.TextLine1 = ident.Username;
Dean@1298
   578
                        item.TextLine2 = ident.Address;
Dean@1298
   579
                        item.ItemImage = null;
Dean@1298
   580
                        item.IsTwoTextLinesVisible = true;
Dean@1298
   581
                        item.IsButtonVisible = false;
Dean@1298
   582
                    }
Dean@1298
   583
Dean@1298
   584
                    managerState.Identities.Add(item);
Dean@1298
   585
                    currIndex++;
Dean@259
   586
                }
Dean@259
   587
Dean@1298
   588
                // Attempt to select and expand the first identity requiring a handshake
Dean@1298
   589
                for (int i = 0; i < managerState.Identities.Count; i++)
Dean@375
   590
                {
Dean@1298
   591
                    // Determine if it's a handshake identity by checking if it's expandable
Dean@1298
   592
                    if (managerState.Identities[i].IsExpandable)
Dean@1298
   593
                    {
Dean@1298
   594
                        managerState.Identities[i].TextButton = Properties.Resources.PrivacyStatus_HandshakeAdvanced;
Dean@1298
   595
                        managerState.Identities[i].IsExpanded = true;
Dean@1298
   596
                        managerState.SelectedIdentityIndex = i;
Dean@1298
   597
                        break;
Dean@1298
   598
                    }
Dean@375
   599
                }
Dean@375
   600
            }
Dean@375
   601
Dean@279
   602
            return (managerState);
Dean@279
   603
        }
Dean@279
   604
Dean@279
   605
        /// <summary>
Dean@279
   606
        /// Builds the latest state of the encryption status manager then shows the UI.
Dean@279
   607
        /// </summary>
Dean@279
   608
        private void BuildAndShowManager()
Dean@279
   609
        {
Dean@279
   610
            DialogResult result;
Dean@313
   611
            FormManagePrivacyStatus form;
Dean@279
   612
Dean@483
   613
            try
Dean@483
   614
            {
Dean@483
   615
                // Show the form
Dean@483
   616
                form = new FormManagePrivacyStatus();
Dean@1082
   617
                form.StartPosition = FormStartPosition.CenterParent;
Dean@1021
   618
                form.FormClosed += ManagerForm_FormClosed;
Dean@1073
   619
                form.FormControl.DisplayState = this.GetManagerState();
Dean@259
   620
Dean@483
   621
                this.managerForm = form;
Dean@1073
   622
                result = form.ShowDialog(this.ParentForm);
Dean@483
   623
            }
Dean@483
   624
            catch (Exception ex)
Dean@483
   625
            {
Dean@860
   626
                Globals.StopAndSendCrashReport(ex);
Dean@483
   627
            }
Dean@259
   628
Dean@259
   629
            return;
Dean@259
   630
        }
Dean@259
   631
Dean@259
   632
        /// <summary>
Dean@1130
   633
        /// Schedules for the pEp rating and UI (including displayed mirror) to be updated.
Dean@1001
   634
        /// This can be called many times with no issue as the update is only run every n milliseconds.
Dean@179
   635
        /// </summary>
Dean@1130
   636
        public void RequestRatingAndUIUpdate()
Dean@1001
   637
        {
Dean@1001
   638
            this.TimerRefresh.Enabled = true;
Dean@1001
   639
            return;
Dean@1001
   640
        }
Dean@1001
   641
Dean@1001
   642
        /// <summary>
Dean@1130
   643
        /// Immediately starts the update of UI rating based on the associated mail item.
Dean@1001
   644
        /// This will start decryption as necessary and also will update the displayed mirror.
Dean@1001
   645
        /// This method by-passes the refresh timer completely.
Dean@1001
   646
        /// WARNING: This method assumes the message is fully downloaded already.
Dean@1001
   647
        /// </summary>
Dean@1130
   648
        private void ImmediateRatingAndUIUpdate()
Dean@159
   649
        {
Dean@173
   650
            if (this.associatedMailItem != null)
Dean@159
   651
            {
Dean@1301
   652
                Log.Verbose("ImmediateRatingAndUIUpdate: Starting processing.");
Dean@740
   653
Dean@1301
   654
                // Start the rating calculation/decryption process
Dean@1301
   655
                this.associatedMailItem.StartProcessing();
Dean@159
   656
            }
Dean@159
   657
Dean@179
   658
            return;
Dean@159
   659
        }
Dean@159
   660
Dean@709
   661
        /// <summary>
Dean@1117
   662
        /// Immediately update the manage privacy status form display state.
Dean@1117
   663
        /// This by default will completely rebuild the display state.
Dean@1117
   664
        /// </summary>
Dean@1130
   665
        /// <param name="onlyRating">True to update only the rating, false to rebuild the entire display state.</param>
Dean@1130
   666
        private void UpdateManagePrivacyStatusForm(bool onlyRating = false)
Dean@1117
   667
        {
Dean@1117
   668
            if (this.managerForm != null)
Dean@1117
   669
            {
Dean@1130
   670
                if (onlyRating)
Dean@1117
   671
                {
Dean@1130
   672
                    // Only update the message rating
Dean@1130
   673
                    this.managerForm.FormControl.DisplayState.Rating = this.FormControlPrivacyStatusChild.DisplayState.Rating;
Dean@1117
   674
                }
Dean@1117
   675
                else
Dean@1117
   676
                {
Dean@1117
   677
                    // Rebuild the entire display state which will update any identity changes
Dean@1117
   678
                    this.managerForm.FormControl.DisplayState = this.GetManagerState();
Dean@1117
   679
                }
Dean@1117
   680
            }
Dean@1117
   681
Dean@1117
   682
            return;
Dean@1117
   683
        }
Dean@1117
   684
Dean@1117
   685
        /// <summary>
Dean@709
   686
        /// Clears the associated unencrypted preview and displays the given note (if any).
Dean@709
   687
        /// </summary>
Dean@709
   688
        /// <param name="note">The note to diplsay.</param>
Dean@709
   689
        private void ClearPreview(string note = null)
Dean@709
   690
        {
Dean@987
   691
            WindowFormRegionCollection formRegions = Globals.FormRegions[Globals.ThisAddIn.Application.ActiveWindow()];
Dean@709
   692
Dean@709
   693
            if ((formRegions != null) &&
Dean@709
   694
                (formRegions.FormRegionPreviewUnencrypted != null) &&
Dean@709
   695
                (formRegions.FormRegionPreviewUnencrypted.Visible))
Dean@709
   696
            {
Dean@709
   697
                formRegions.FormRegionPreviewUnencrypted.ClearMessage();
Dean@709
   698
                formRegions.FormRegionPreviewUnencrypted.SetNote(note);
Dean@709
   699
            }
Dean@709
   700
Dean@709
   701
            return;
Dean@709
   702
        }
Dean@709
   703
Dean@159
   704
        /**************************************************************
Dean@159
   705
         * 
Dean@159
   706
         * Event Handling
Dean@159
   707
         * 
Dean@159
   708
         *************************************************************/
Dean@159
   709
Dean@159
   710
        /// <summary>
Dean@680
   711
        /// Event handler that is called when the form region is displayed.
Dean@1211
   712
        /// This is called each time the form region looses then regains visibility 
Dean@680
   713
        /// (for example an other email is selected then back to this one).
Dean@159
   714
        /// </summary>
Dean@312
   715
        private void FormRegionPrivacyStatus_FormRegionShowing(object sender, System.EventArgs e)
Dean@159
   716
        {
Dean@1169
   717
            bool setByCache = false;
Dean@1197
   718
            PEPIdentity currIdent;
Dean@1197
   719
            Globals.ReturnStatus sts;
Dean@1197
   720
            Outlook.MailItem omi = null;
Dean@1197
   721
            Outlook.Recipient currUser = null;
Dean@1197
   722
            Outlook.Account currAccount = null;
Dean@1197
   723
            Outlook.Account sendingAccount = null;
Dean@1197
   724
            Outlook.NameSpace ns = Globals.ThisAddIn.Application.Session;
Dean@1169
   725
Dean@680
   726
            // Do not allow initialization more than once
Dean@680
   727
            if (initialized == false)
Dean@680
   728
            {
Dean@680
   729
                this.SetAssociatedMailItem();
Dean@173
   730
Dean@1197
   731
                /* It's possible for new draft MailItems to be created outside the context of an account.
Dean@1197
   732
                 * In this situation the SendUsingAccount will always be null which of course breaks several pEp operations.
Dean@1197
   733
                 * The operations themselves cannot make the assumption about what account information to use.
Dean@1197
   734
                 * Therefore, the situation is detected here and for draft mail items a null SendUsingAccount will be 
Dean@1198
   735
                 * set with the session's default account.
Dean@1197
   736
                 */
Dean@1197
   737
                try
Dean@1197
   738
                {
Dean@1303
   739
                    if ((this.OutlookItem is Outlook.MailItem) &&
Dean@1303
   740
                        ((Outlook.MailItem)this.OutlookItem).GetIsDraft())
Dean@1197
   741
                    {
Dean@1303
   742
                        omi = this.OutlookItem as Outlook.MailItem;
Dean@1197
   743
                        sendingAccount = omi.SendUsingAccount;
Dean@1197
   744
                        currUser = ns.CurrentUser;
Dean@1197
   745
Dean@1197
   746
                        if (sendingAccount == null)
Dean@1197
   747
                        {
Dean@1202
   748
                            sts = PEPIdentity.Create(currUser, out currIdent);
Dean@1197
   749
Dean@1197
   750
                            if (sts == Globals.ReturnStatus.Success)
Dean@1197
   751
                            {
Dean@1198
   752
                                currAccount = PEPIdentity.GetOwnAccount(currIdent.Address);
Dean@1198
   753
                                omi.SendUsingAccount = currAccount;
Dean@1197
   754
                            }
Dean@1197
   755
                        }
Dean@1197
   756
                    }
Dean@1197
   757
                }
Dean@1197
   758
                catch { }
Dean@1197
   759
                finally
Dean@1197
   760
                {
Dean@1197
   761
                    if (omi != null)
Dean@1197
   762
                    {
Dean@1197
   763
                        Marshal.ReleaseComObject(omi);
Dean@1197
   764
                        omi = null;
Dean@1197
   765
                    }
Dean@1197
   766
Dean@1197
   767
                    if (currUser != null)
Dean@1197
   768
                    {
Dean@1197
   769
                        Marshal.ReleaseComObject(currUser);
Dean@1197
   770
                        currUser = null;
Dean@1197
   771
                    }
Dean@1197
   772
Dean@1197
   773
                    if (currAccount != null)
Dean@1197
   774
                    {
Dean@1197
   775
                        Marshal.ReleaseComObject(currAccount);
Dean@1197
   776
                        currAccount = null;
Dean@1197
   777
                    }
Dean@1197
   778
Dean@1197
   779
                    if (sendingAccount != null)
Dean@1197
   780
                    {
Dean@1197
   781
                        Marshal.ReleaseComObject(sendingAccount);
Dean@1197
   782
                        sendingAccount = null;
Dean@1197
   783
                    }
Dean@1197
   784
Dean@1197
   785
                    if (ns != null)
Dean@1197
   786
                    {
Dean@1197
   787
                        Marshal.ReleaseComObject(ns);
Dean@1197
   788
                        ns = null;
Dean@1197
   789
                    }
Dean@1197
   790
                }
Dean@1197
   791
Dean@1136
   792
                // Set reader upgrade link visibility
Dean@1286
   793
                if ((Globals.RELEASE_MODE == Globals.ReleaseMode.Reader) &&
Dean@1286
   794
                    (this.associatedMailItem != null) &&
Dean@1286
   795
                    (this.associatedMailItem.IsDraft))
Dean@1286
   796
                {
Dean@1286
   797
                    this.FormControlPrivacyStatusChild.DisplayState.UpgradeLinkIsVisible = true;
Dean@1286
   798
                }
Dean@1286
   799
                else
Dean@1286
   800
                {
Dean@1286
   801
                    this.FormControlPrivacyStatusChild.DisplayState.UpgradeLinkIsVisible = false;
Dean@1286
   802
                }
Dean@1169
   803
Dean@680
   804
                if (this.associatedMailItem != null)
Dean@680
   805
                {
Dean@1169
   806
                    // Connect cryptable mail item events
Dean@680
   807
                    try
Dean@680
   808
                    {
Dean@680
   809
                        this.associatedMailItem.PropertyChanged += MailItem_PropertyChanged;
Dean@1096
   810
                        this.associatedMailItem.ProcessingCompleted += MailItem_ProcessingCompleted;
Dean@1096
   811
                        this.associatedMailItem.GetMirrorCompleted += MailItem_GetMirrorCompleted;
Dean@682
   812
                        this.associatedMailItem.Send += MailItem_Send;
Dean@680
   813
Dean@1303
   814
                        if (this.associatedMailItem.IsSecurelyStored)
Dean@680
   815
                        {
Dean@680
   816
                            this.associatedMailItem.Open += MailItem_Open;
Dean@680
   817
                        }
Dean@680
   818
                    }
Dean@680
   819
                    catch { }
Dean@1169
   820
Dean@1169
   821
                    /* For a MailItem being forwarded or replied to it's import to check against the encrypted conversation cache.
Dean@1169
   822
                     * This is normally done within CryptableMailItem_EncryptedConversationCacheUpdated; however,
Dean@1169
   823
                     * for trusted servers that use an in-line reponse, the EncryptedConversationCacheUpdated event occurs
Dean@1169
   824
                     * BEFORE the new mail item is created. This means it never sees the event.
Dean@1169
   825
                     * To get around this issue, when the form region is first shown, also check if the mail item
Dean@1170
   826
                     * exists in the encrypted conversation cache and should be marked as formerly encrypted.
Dean@1169
   827
                     * If this check passes, never event connect the CryptableMailItem_EncryptedConversationCacheUpdated event.
Dean@1169
   828
                     */
Dean@1169
   829
                    setByCache = this.associatedMailItem.SetIsOriginallyEncryptedByCache();
Dean@680
   830
                }
Dean@680
   831
Dean@1086
   832
                // Connect events
Dean@1169
   833
                if (setByCache == false) { CryptableMailItem.EncryptedConversationCacheUpdated += CryptableMailItem_EncryptedConversationCacheUpdated; }
Dean@1086
   834
                this.FormControlPrivacyStatusChild.PrivacyViewClick += FormControlPrivacyStatusChild_PrivacyViewClick;
Dean@807
   835
Dean@683
   836
                this.TimerRefresh.Tick += TimerRefresh_Tick;
Dean@680
   837
                this.initialized = true;
Dean@179
   838
            }
Dean@159
   839
Dean@683
   840
            // Call the timer tick method manually to refresh data with no delay
Dean@199
   841
            this.TimerRefresh_Tick(null, new EventArgs());
Dean@179
   842
Dean@179
   843
            return;
Dean@159
   844
        }
Dean@159
   845
Dean@159
   846
        /// <summary>
Dean@159
   847
        /// Event handler for when the form region is closed.
Dean@159
   848
        /// </summary>
Dean@312
   849
        private void FormRegionPrivacyStatus_FormRegionClosed(object sender, System.EventArgs e)
Dean@159
   850
        {
Dean@199
   851
            // Disconnect cryptable mail item events
Dean@190
   852
            if (this.associatedMailItem != null)
Dean@179
   853
            {
Dean@179
   854
                try
Dean@179
   855
                {
Dean@445
   856
                    this.associatedMailItem.PropertyChanged -= MailItem_PropertyChanged;
Dean@1096
   857
                    this.associatedMailItem.ProcessingCompleted -= MailItem_ProcessingCompleted;
Dean@1096
   858
                    this.associatedMailItem.GetMirrorCompleted -= MailItem_GetMirrorCompleted;
markus@201
   859
                    this.associatedMailItem.Open -= MailItem_Open;
Dean@682
   860
                    this.associatedMailItem.Send -= MailItem_Send;
Dean@179
   861
                }
Dean@179
   862
                catch { }
Dean@179
   863
            }
Dean@179
   864
Dean@1086
   865
            // Disconnect events
Dean@807
   866
            CryptableMailItem.EncryptedConversationCacheUpdated -= CryptableMailItem_EncryptedConversationCacheUpdated;
Dean@1086
   867
            this.FormControlPrivacyStatusChild.PrivacyViewClick -= FormControlPrivacyStatusChild_PrivacyViewClick;
Dean@807
   868
Dean@682
   869
            // Stop and disconnect the refresh timer
Dean@682
   870
            this.TimerRefresh.Stop();
Dean@682
   871
            this.TimerRefresh.Enabled = false;
Dean@682
   872
            this.TimerRefresh.Tick -= TimerRefresh_Tick;
Dean@682
   873
Dean@179
   874
            return;
Dean@179
   875
        }
Dean@179
   876
Dean@179
   877
        /// <summary>
Dean@179
   878
        /// Event handler called after the refresh timer has elapsed.
Dean@179
   879
        /// </summary>
Dean@179
   880
        private void TimerRefresh_Tick(object sender, EventArgs e)
Dean@179
   881
        {
Dean@199
   882
            bool tryAgain = false;
Dean@684
   883
            bool markForDownload = false;
Dean@179
   884
            this.TimerRefresh.Enabled = false; // Only once
Dean@684
   885
            Outlook.OlDownloadState dlState;
markus@201
   886
Dean@709
   887
            /* The Refresh/UI_Update process is a little more complicated here than other forms.
Dean@709
   888
             * There are the following components:
Dean@709
   889
             *   1. TimerRefresh_Tick
Dean@709
   890
             *        This is the main timer tick event handler called any time
Dean@1130
   891
             *        a refresh was requested (RequestRatingAndUIUpdate) and hasn't been run yet. 
Dean@1001
   892
             *        A refresh is requested either at initialization or when a property changes
Dean@709
   893
             *        (such as MailItem_PropertyChanged). It is on a timer as many 
Dean@709
   894
             *        property change events could occur rapidy, but only one refresh should
Dean@709
   895
             *        occur for performance reasons.
Dean@709
   896
             * 
Dean@1130
   897
             *   2. ImmediateRatingAndUIUpdate
Dean@1307
   898
             *        This will re-calculate the mail item's rating.
Dean@1307
   899
             *        This internally just calls CryptableMailItem.StartProcessing.
Dean@709
   900
             * 
Dean@1130
   901
             *   3. MailItem_ProcessingCompleted
Dean@1307
   902
             *        When processing of the mail item is complete, this even handler will be called.
Dean@1130
   903
             *        This will update the UI with the latest rating then call StartGetMirror.
Dean@709
   904
             *        The CopyStateToUI method is used which means any open privacy status form will also
Dean@709
   905
             *        be updated.
Dean@709
   906
             * 
Dean@709
   907
             *   4. MailItem_GetMirrorComplete
Dean@709
   908
             *        This is the final step in updating the UI, after a mirror is located, it's contents
Dean@1307
   909
             *        will be shown in the unencrypted preview.
Dean@709
   910
             * 
Dean@709
   911
             * The general calling sequence is as shown above 1->4 with each component calling the next.
Dean@709
   912
             * However, for methods that update the mail item directly, commonly only 2->4 is needed.
Dean@709
   913
             */
Dean@709
   914
Dean@179
   915
            // Ensure the tick method is not called more than once
Dean@179
   916
            if (refreshOngoing == false)
Dean@179
   917
            {
Dean@179
   918
                this.refreshOngoing = true;
Dean@179
   919
Dean@179
   920
                if (this.associatedMailItem != null)
Dean@179
   921
                {
Dean@684
   922
                    // Attempt to get the download state
Dean@684
   923
                    try
Dean@684
   924
                    {
Dean@684
   925
                        dlState = this.associatedMailItem.DownloadState;
Dean@684
   926
                    }
Dean@684
   927
                    catch (Exception ex)
Dean@684
   928
                    {
Dean@1249
   929
                        Log.Warning("TimerRefresh_Tick: Get DownloadState failed, " + ex.ToString());
Dean@684
   930
Dean@684
   931
                        // Assume everything is downloaded, but try to download again as well
Dean@684
   932
                        dlState = Outlook.OlDownloadState.olFullItem;
Dean@684
   933
                        markForDownload = true;
Dean@684
   934
                    }
Dean@684
   935
Dean@684
   936
                    if (dlState == Outlook.OlDownloadState.olFullItem)
Dean@179
   937
                    {
Dean@1130
   938
                        this.ImmediateRatingAndUIUpdate();
Dean@179
   939
                    }
Dean@179
   940
                    else
Dean@179
   941
                    {
Dean@684
   942
                        markForDownload = true;
Dean@684
   943
                    }
Dean@684
   944
Dean@684
   945
                    if (markForDownload)
Dean@684
   946
                    {
Dean@684
   947
                        // Try to mark the message for full download
Dean@684
   948
                        try
Dean@684
   949
                        {
Dean@684
   950
                            this.associatedMailItem.MarkForDownload = Outlook.OlRemoteStatus.olMarkedForDownload;
Dean@684
   951
                            tryAgain = true;
Dean@684
   952
                        }
Dean@684
   953
                        catch (Exception ex)
Dean@684
   954
                        {
Dean@1249
   955
                            Log.Warning("TimerRefresh_Tick: MarkForDownload failed, " + ex.ToString());
Dean@684
   956
                        }
Dean@179
   957
                    }
Dean@179
   958
                }
Dean@179
   959
Dean@199
   960
                // Set the timer to refresh again later automatically
Dean@199
   961
                if (tryAgain)
Dean@199
   962
                {
Dean@199
   963
                    this.TimerRefresh.Interval = 100;
Dean@199
   964
                    this.TimerRefresh.Enabled = true;
Dean@199
   965
                }
Dean@199
   966
Dean@179
   967
                this.refreshOngoing = false;
Dean@179
   968
            }
Dean@175
   969
Dean@159
   970
            return;
Dean@159
   971
        }
Dean@159
   972
Dean@169
   973
        /// <summary>
Dean@1096
   974
        /// Event handler for when the processing is completed in the associated mail item.
Dean@709
   975
        /// This will then update the form region UI and the privacy status window as needed.
Dean@680
   976
        /// </summary>
Dean@1096
   977
        private void MailItem_ProcessingCompleted(object sender, CryptableMailItem.ProcessingCompletedEventArgs e)
Dean@680
   978
        {
Dean@1249
   979
            Log.Verbose("MailItem_ProcessingComplete: Decryption completed.");
Dean@740
   980
Dean@680
   981
            try
Dean@680
   982
            {
Dean@680
   983
                // Marshal code back to UI thread as necessary
Dean@680
   984
                this.Invoke(new Action(() =>
Dean@680
   985
                    {
Dean@1130
   986
                        this.FormControlPrivacyStatusChild.DisplayState.Rating = e.Rating;
Dean@1130
   987
                        this.UpdateManagePrivacyStatusForm(true); // Only update the rating
Dean@709
   988
Dean@709
   989
                        /* Create the unencrypted preview if the mail item is encrypted and
Dean@709
   990
                         * it is in an encrypted (untrusted) store
Dean@709
   991
                         * 
Dean@709
   992
                         * This is done here because FormRegionPrivacyStatus has the cryptable mail item and
Dean@709
   993
                         * it also is initialized after FormRegionPreviewUnencrypted.
Dean@709
   994
                         */
Dean@747
   995
                        try
Dean@709
   996
                        {
Dean@1303
   997
                            if (this.associatedMailItem.IsSecurelyStored)
Dean@747
   998
                            {
Dean@1249
   999
                                Log.Verbose("MailItem_ProcessingComplete: Starting mirror location.");
Dean@747
  1000
                                this.associatedMailItem.StartGetMirror();
Dean@747
  1001
                            }
Dean@747
  1002
                            else
Dean@747
  1003
                            {
Dean@747
  1004
                                this.ClearPreview();
Dean@747
  1005
                            }
Dean@709
  1006
                        }
Dean@747
  1007
                        catch (Exception ex)
Dean@719
  1008
                        {
Dean@747
  1009
                            // Error is possible in some situations where the mail item was deleted or moved while decryption was ongoing.
Dean@747
  1010
                            // While rare, just log the issue and stop the process
Dean@1249
  1011
                            Log.Warning("MailItem_ProcessingComplete: Failed to start mirror location, " + ex.ToString());
Dean@719
  1012
                        }
Dean@680
  1013
                    }));
Dean@680
  1014
            }
Dean@680
  1015
            catch (Exception ex)
Dean@680
  1016
            {
Dean@1249
  1017
                Log.Error("MailItem_ProcessingComplete: Error setting UI state, " + ex.ToString());
Dean@680
  1018
            }
Dean@680
  1019
Dean@680
  1020
            return;
Dean@680
  1021
        }
Dean@680
  1022
Dean@680
  1023
        /// <summary>
Dean@709
  1024
        /// Event handler for when the get mirror locating process is complete for the associated mail item.
Dean@709
  1025
        /// This will then update the unencrypted preview in the UI.
Dean@709
  1026
        /// </summary>
Dean@1096
  1027
        private void MailItem_GetMirrorCompleted(object sender, CryptableMailItem.GetMirrorCompletedEventArgs e)
Dean@709
  1028
        {
Dean@709
  1029
            try
Dean@709
  1030
            {
Dean@709
  1031
                // Marshal code back to UI thread as necessary
Dean@709
  1032
                this.Invoke(new Action(() =>
Dean@709
  1033
                    {
Dean@987
  1034
                        WindowFormRegionCollection formRegions = Globals.FormRegions[Globals.ThisAddIn.Application.ActiveWindow()];
Dean@709
  1035
Dean@910
  1036
                        if ((e.Mirror == null) &&
Dean@1096
  1037
                            (this.associatedMailItem.LastProcessingStatus == Globals.ReturnStatus.Failure))
Dean@1014
  1038
                        {
Dean@1014
  1039
                            this.ClearPreview(Properties.Resources.Message_OpenError);
Dean@1249
  1040
                            Log.Verbose("MailItem_GetMirrorComplete: Cannot display mirror, failure during decryption.");
Dean@1014
  1041
                        }
Dean@1014
  1042
                        else if ((e.Mirror == null) &&
Dean@1096
  1043
                                 (this.associatedMailItem.LastProcessingStatus == Globals.ReturnStatus.FailureNoConnection))
Dean@709
  1044
                        {
Dean@910
  1045
                            this.ClearPreview(Properties.Resources.Message_DecryptionNoConnection);
Dean@1249
  1046
                            Log.Verbose("MailItem_GetMirrorComplete: Cannot display mirror, connection failure during decryption.");
Dean@910
  1047
                        }
Dean@910
  1048
                        else
Dean@910
  1049
                        {
Dean@910
  1050
                            if ((formRegions != null) &&
Dean@910
  1051
                                (formRegions.FormRegionPreviewUnencrypted != null) &&
Dean@910
  1052
                                (formRegions.FormRegionPreviewUnencrypted.Visible))
Dean@910
  1053
                            {
Dean@910
  1054
                                formRegions.FormRegionPreviewUnencrypted.SetMessage(e.Mirror);
Dean@1249
  1055
                                Log.Verbose("MailItem_GetMirrorComplete: Mirror found and displayed.");
Dean@910
  1056
                            }
Dean@709
  1057
                        }
Dean@758
  1058
Dean@758
  1059
                        // Display the mirror if necessary
Dean@758
  1060
                        if ((this.associatedMailItem != null) &&
Dean@758
  1061
                            (this.displayMirrorRequested))
Dean@758
  1062
                        {
Dean@758
  1063
                            this.associatedMailItem.DisplayMirror();
Dean@758
  1064
                            this.displayMirrorRequested = false;
Dean@758
  1065
                        }
Dean@709
  1066
                    }));
Dean@709
  1067
            }
Dean@709
  1068
            catch (Exception ex)
Dean@709
  1069
            {
Dean@1249
  1070
                Log.Error("MailItem_GetMirrorComplete: Error displaying preview, " + ex.ToString());
Dean@709
  1071
            }
Dean@709
  1072
Dean@709
  1073
            return;
Dean@709
  1074
        }
Dean@709
  1075
Dean@709
  1076
        /// <summary>
Dean@807
  1077
        /// Event handler for the static mail item encrypted conversation cache updated.
Dean@807
  1078
        /// This event is fired after the conversation cache has been updated with parent information following a
Dean@807
  1079
        /// forward or reply mail item event (on a different, likely parent, mail item).
Dean@807
  1080
        /// </summary>
Dean@807
  1081
        private void CryptableMailItem_EncryptedConversationCacheUpdated(object sender, EventArgs e)
Dean@807
  1082
        {
Dean@807
  1083
            // Process the mail item now that the cache is updated
Dean@807
  1084
            this.associatedMailItem.SetIsOriginallyEncryptedByCache();
Dean@807
  1085
Dean@807
  1086
            // Remove the event handler -- this can only be processed once because it's timing dependent
Dean@807
  1087
            CryptableMailItem.EncryptedConversationCacheUpdated -= CryptableMailItem_EncryptedConversationCacheUpdated;
Dean@807
  1088
Dean@807
  1089
            return;
Dean@807
  1090
        }
Dean@807
  1091
Dean@807
  1092
        /// <summary>
Dean@169
  1093
        /// Event handler for when a mail item is being opened in an inspector.
Dean@180
  1094
        /// See: https://msdn.microsoft.com/en-us/library/office/ff865989.aspx
Dean@169
  1095
        /// </summary>
Dean@169
  1096
        /// <param name="cancel">Whether to cancel the event: Value is False when the event occurs. 
Dean@169
  1097
        /// If the event procedure sets this argument to True, the open operation is not completed 
Dean@169
  1098
        /// and the inspector is not displayed.</param>
Dean@169
  1099
        private void MailItem_Open(ref bool cancel)
Dean@159
  1100
        {
Dean@758
  1101
            bool result;
Dean@758
  1102
Dean@758
  1103
            if (this.associatedMailItem != null &&
Dean@1303
  1104
                this.associatedMailItem.IsSecurelyStored)
Dean@169
  1105
            {
Dean@758
  1106
                // Try to open the mirror
Dean@758
  1107
                result = this.associatedMailItem.DisplayMirror();
Dean@758
  1108
Dean@758
  1109
                if (result == false)
Dean@758
  1110
                {
Dean@758
  1111
                    // Set flag to open after decryption/mirror location
Dean@758
  1112
                    this.displayMirrorRequested = true;
Dean@758
  1113
                }
Dean@758
  1114
Dean@758
  1115
                // Always cancel opening the original
Dean@169
  1116
                cancel = true;
Dean@169
  1117
            }
Dean@169
  1118
Dean@169
  1119
            return;
Dean@159
  1120
        }
Dean@159
  1121
Dean@169
  1122
        /// <summary>
Dean@682
  1123
        /// Event handler for when a mail item is sent.
Dean@682
  1124
        /// See: https://msdn.microsoft.com/en-us/library/office/ff865379.aspx
Dean@682
  1125
        /// </summary>
Dean@682
  1126
        /// <param name="cancel">Whether to cancel the event: Value is False when the event occurs. 
Dean@682
  1127
        /// If the event procedure sets this argument to True, the send operation is not completed 
Dean@682
  1128
        /// and the inspector is left open.</param>
Dean@682
  1129
        private void MailItem_Send(ref bool cancel)
Dean@682
  1130
        {
Dean@807
  1131
            DialogResult result;
Dean@807
  1132
Dean@1170
  1133
            if ((Globals.ThisAddIn.Settings.IsSecurityLossWarningEnabled) &&
Dean@1170
  1134
                (this.associatedMailItem.IsOriginallyEncrypted) &&
Dean@1130
  1135
                (this.FormControlPrivacyStatusChild.DisplayState.Rating < _pEp_color.pEp_rating_unreliable))
Dean@807
  1136
            {
Dean@1074
  1137
                result = System.Windows.Forms.MessageBox.Show(this.ParentForm,
Dean@1170
  1138
                                                              pEp.Properties.Resources.Message_WarningSecurityLoss,
Dean@1074
  1139
                                                              pEp.Properties.Resources.Message_TitleConfirmOperation,
Dean@1169
  1140
                                                              MessageBoxButtons.YesNo,
Dean@1169
  1141
                                                              MessageBoxIcon.Warning);
Dean@807
  1142
Dean@807
  1143
                if (result == DialogResult.No)
Dean@807
  1144
                {
Dean@807
  1145
                    // Cancel sending
Dean@807
  1146
                    cancel = true;
Dean@807
  1147
                }
Dean@807
  1148
            }
Dean@807
  1149
Dean@682
  1150
            // Stop and disconnect the refresh timer
Dean@682
  1151
            // This is necessary so an ongoing refresh doesn't try to access a mail item as it's being moved
Dean@807
  1152
            if (cancel == false)
Dean@807
  1153
            {
Dean@807
  1154
                this.TimerRefresh.Stop();
Dean@807
  1155
                this.TimerRefresh.Enabled = false;
Dean@807
  1156
                this.TimerRefresh.Tick -= TimerRefresh_Tick;
Dean@807
  1157
            }
Dean@682
  1158
Dean@682
  1159
            return;
Dean@682
  1160
        }
Dean@682
  1161
Dean@682
  1162
        /// <summary>
Dean@169
  1163
        /// Event handler for when a mail item property is changed.
Dean@169
  1164
        /// See: https://msdn.microsoft.com/en-us/library/office/ff866739.aspx
Dean@169
  1165
        /// </summary>
Dean@169
  1166
        /// <param name="propertyName">The name of the property that was changed.</param>
Dean@445
  1167
        private void MailItem_PropertyChanged(object sender, PropertyChangedEventArgs e)
Dean@159
  1168
        {
Dean@445
  1169
            switch (e.PropertyName.ToUpper())
Dean@159
  1170
            {
Dean@179
  1171
                case "TO":
Dean@1130
  1172
                    this.RequestRatingAndUIUpdate();
Dean@159
  1173
                    break;
Dean@1106
  1174
                    // Outlook bug: there are always both events, so one is enough
Dean@1106
  1175
                    //case "CC":
Dean@1130
  1176
                    //    this.RequestRatingAndUIUpdate();
Dean@1106
  1177
                    //    break;
Dean@159
  1178
            }
Dean@169
  1179
Dean@169
  1180
            return;
Dean@159
  1181
        }
Dean@159
  1182
Dean@179
  1183
        /// <summary>
Dean@1021
  1184
        /// Event handler for when the manager form is closed.
Dean@1021
  1185
        /// </summary>
Dean@1021
  1186
        private void ManagerForm_FormClosed(object sender, FormClosedEventArgs e)
Dean@1021
  1187
        {
Dean@1021
  1188
            // Remove the reference held in the FormRegionPrivacyStatus so it stops getting updated
Dean@1021
  1189
            if (this.managerForm != null)
Dean@1021
  1190
            {
Dean@1021
  1191
                this.managerForm.FormClosed -= ManagerForm_FormClosed;
Dean@1021
  1192
                this.managerForm = null;
Dean@1021
  1193
            }
Dean@1021
  1194
Dean@1021
  1195
            return;
Dean@1021
  1196
        }
Dean@1021
  1197
Dean@1021
  1198
        /// <summary>
Dean@859
  1199
        /// Event handler for when the pEp website hyperlink is clicked.
Dean@859
  1200
        /// </summary>
Dean@859
  1201
        private void LinkLabelUpgrade_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
Dean@859
  1202
        {
Dean@966
  1203
            try
Dean@966
  1204
            {
Dean@1007
  1205
                Process.Start(Globals.PEP_WEBSITE_UPGRADE_LINK);
Dean@966
  1206
            }
Dean@966
  1207
            catch (Exception ex)
Dean@966
  1208
            {
Dean@1249
  1209
                Log.Error("LinkLabelUpgrade_LinkClicked: Unable to open website link, " + ex.ToString());
Dean@966
  1210
            }
Dean@966
  1211
Dean@859
  1212
            return;
Dean@859
  1213
        }
Dean@1047
  1214
Dean@1047
  1215
        /// <summary>
Dean@1086
  1216
        /// Event handler for when the privacy view button is clicked within the form control.
Dean@1047
  1217
        /// </summary>
Dean@1086
  1218
        private void FormControlPrivacyStatusChild_PrivacyViewClick(object sender, System.Windows.RoutedEventArgs e)
Dean@1047
  1219
        {
Dean@1130
  1220
            this.RequestRatingAndUIUpdate();
Dean@1047
  1221
            this.BuildAndShowManager();
Dean@1047
  1222
            return;
Dean@1047
  1223
        }
vb@133
  1224
    }
vb@133
  1225
}