[feat] Display encryption status of email addresses in compose window

When composing an email, display the encryption status for each address.
If the public key for a given address is found, show the "lock" sign
(encrypted) in front of it otherwise show the "unlocked" sign
(unencrypted). This status is fetched using the keymanager.

5 files changed, 90 insertions, 0 deletions

diff --git a/chrome.manifest b/chrome.manifest
index 98d7b4b..bbbcc10 100644
--- a/chrome.manifest
+++ b/chrome.manifest
@@ -4,3 +4,4 @@ locale  bitmask    en-US           chrome/locale/en-US/
 overlay chrome://messenger/content/messenger.xul chrome://bitmask/content/accountWizard/bitmaskMessengerOverlay.xul
 overlay chrome://messenger/content/AccountManager.xul chrome://bitmask/content/accountWizard/bitmaskAccountManagerOverlay.xul
 overlay chrome://messenger/content/am-offline.xul chrome://bitmask/content/preventCaching/bitmaskAmOfflineOverlay.xul
+overlay chrome://messenger/content/messengercompose/messengercompose.xul chrome://bitmask/content/messengercompose.xul
diff --git a/chrome/content/messengercompose.js b/chrome/content/messengercompose.js
new file mode 100644
index 0000000..4b12f64
--- /dev/null
+++ b/chrome/content/messengercompose.js
@@ -0,0 +1,78 @@
+var composeStateListener = {
+  NotifyComposeBodyReady: function() {
+  }
+};
+
+// From addressingWidgetOverlay.js; we use this to call the function to update
+// the status of the encryption keys for the various "To" fields.  This is for
+// the case where the user presses "Return" or "Tab" and Thunderbird inserts a
+// new "To" row, and we then update the encryption key status for each row.
+function awRecipientKeyPress(event, element)
+{
+  switch(event.keyCode) {
+  case KeyEvent.DOM_VK_RETURN:
+  case KeyEvent.DOM_VK_TAB:
+    // if the user text contains a comma or a line return, ignore
+    if (element.value.includes(','))
+    {
+      var addresses = element.value;
+      element.value = ""; // clear out the current line so we don't try to autocomplete it..
+      parseAndAddAddresses(addresses, awGetPopupElement(awGetRowByInputElement(element)).value);
+    }
+    else if (event.keyCode == KeyEvent.DOM_VK_TAB)
+      awTabFromRecipient(element, event);
+
+    // Bitmask: update the encryption status.
+    checkToField.updateEncryptionStatus();
+    break;
+  }
+}
+
+var checkToField = {
+  // It is possible to enter all "To" addresses in a single field but since we
+  // are displaying the encryption key per field (per row), we need to split a
+  // single field into multiple fields if it contains a "," and then check
+  // the encryption status for each field.
+  splitInput: function(event) {
+    let id = event.target.id;
+    id = id.slice(id.lastIndexOf('#')+1);
+
+    let toFieldInput = document.getElementById("addressCol2#" + id);
+
+    if (toFieldInput.value.includes(",")) {
+      let addresses = toFieldInput.value;
+      toFieldInput.value = "";
+      parseAndAddAddresses(addresses, awGetPopupElement(awGetRowByInputElement(toFieldInput)).value);
+      checkToField.updateEncryptionStatus();
+    }
+  },
+
+  updateEncryptionStatus: function() {
+    for (let i = 1; i <= awGetNumberOfRecipients(); i++) {
+      // Get the "To" field which has the email address.
+      let toField = document.getElementById("addressCol2#" + i);
+      // gCurrentIdentity.email returns the current identity.
+      let promise = bitmask.keys.exprt(gCurrentIdentity.email, toField.value);
+
+      if (toField.value) {
+        let image = document.createElement("image");
+        toField.appendChild(image);
+
+        promise.then(function(data) {
+          toField.getElementsByTagName("image")[0].setAttribute("src",
+            "chrome://bitmask/skin/lock.png");
+        }).catch(function(error) {
+          toField.getElementsByTagName("image")[0].setAttribute("src",
+            "chrome://bitmask/skin/unlock.png");
+        });
+      }
+      else {
+        toField.getElementsByTagName("image")[0].setAttribute("src", "");
+      }
+    }
+  }
+};
+
+window.addEventListener("compose-window-init", function(event) {
+  gMsgCompose.RegisterStateListener(composeStateListener);
+}, true);
diff --git a/chrome/content/messengercompose.xul b/chrome/content/messengercompose.xul
new file mode 100644
index 0000000..e3fcf34
--- /dev/null
+++ b/chrome/content/messengercompose.xul
@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+
+<overlay id="bitmaskComposeOverlay"
+    xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script type="application/javascript" src="chrome://bitmask/content/bitmask.js" />
+  <script type="application/javascript" src="chrome://bitmask/content/messengercompose.js" />
+
+  <textbox id="addressCol2#1" oninput="checkToField.splitInput(event);" />
+
+</overlay>
diff --git a/chrome/skin/lock.png b/chrome/skin/lock.png
new file mode 100644
index 0000000..2a533cb
--- /dev/null
+++ b/chrome/skin/lock.png
diff --git a/chrome/skin/unlock.png b/chrome/skin/unlock.png
new file mode 100644
index 0000000..0dbcd90
--- /dev/null
+++ b/chrome/skin/unlock.png