Bug 783846 - Part 1 - Allow paste within contentEditable elements. r=wesj

mobile/android/base/tests/roboextender/testSelectionHandler.html

@@ -9,6 +9,7 @@
 const DIV_POINT_TEXT = "Under";
 const INPUT_TEXT = "Text for select all in an <input>";
 const TEXTAREA_TEXT = "Text for select all in a <textarea>";
+const PASTE_TEXT = "Text for testing paste";
 const READONLY_INPUT_TEXT = "readOnly text";
 
 const { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
@@ -28,6 +29,7 @@ function startTests() {
     then(testReadonlyInput).
     then(testCloseSelection).
     then(testStartSelectionFail).
+    then(testPaste).
 
     then(testAttachCaret).
     then(testAttachCaretFail).
@@ -348,6 +350,44 @@ function testAttachCaretFail() {
 }
 
 
+/*
+ * Tests related to pasting text inside editable elements:
+ *   * input
+ *   * textarea
+ *   * contentEditable elements
+ */
+function testPaste() {
+  var sh = getSelectionHandler();
+  var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
+  clipboard.copyString(PASTE_TEXT, document);
+
+  // Add a contentEditable element to the document.
+  var div = document.createElement("div");
+  div.contentEditable = true;
+  div.dataset.editable = true;
+  document.body.appendChild(div);
+
+  var elements = document.querySelectorAll("div, input, textarea");
+  var promises = [];
+
+  for (var i = 0; i < elements.length; i++) {
+    sh.startSelection(elements[i]);
+    sh.actions.PASTE.action(elements[i]);
+    if (elements[i].dataset.editable) {
+      promises.push(is(getTextValue(elements[i]), PASTE_TEXT, "Pasted correctly"));
+      promises.push(ok(sh.isElementEditableText(elements[i]), "Element is editable"));
+    } else {
+      promises.push(isnot(getTextValue(elements[i]), PASTE_TEXT, "Paste failed correctly"));
+      promises.push(ok(!sh.isElementEditableText(elements[i]), "Element is not editable"));
+    }
+  }
+
+  document.body.removeChild(div);
+  div = null;
+
+  return Promise.all(promises);
+}
+
 /* =================================================================================
  *
  * After finish of all selection tests, wrap up and go home.
@@ -373,6 +413,10 @@ function getSelectionHandler() {
     this._selectionHandler;
 }
 
+function getTextValue(aElement) {
+  return aElement.value || aElement.textContent;
+}
+
 function ok(one, msg) {
   return Messaging.sendRequestForResult({
     type: "Robocop:testSelectionHandler",
@@ -389,6 +433,14 @@ function is(one, two, msg) {
   });
 }
 
+function isnot(one, two, msg) {
+  return Messaging.sendRequestForResult({
+    type: "Robocop:testSelectionHandler",
+    result: one !== two,
+    msg: msg + " : " + one + " !== " + two
+  });
+}
+
 /* =================================================================================
  *
  * Page definition for all tests.
@@ -424,9 +476,9 @@ function is(one, two, msg) {
       nunc vel, fringilla turpis. Nulla lacinia, leo ut egestas hendrerit, risus
       ligula interdum enim, vel varius libero sem ut ligula.</div><br>
 
-    <input id="inputNode" type="text"><br>
+    <input data-editable="true" id="inputNode" type="text"><br>
 
-    <textarea id="textareaNode"></textarea><br>
+    <textarea data-editable="true" id="textareaNode"></textarea><br>
 
     <input id="readOnlyTextInput" type="text" readonly><br>
 

mobile/android/chrome/content/SelectionHandler.js

@@ -671,10 +671,10 @@ var SelectionHandler = {
       id: "paste_action",
       icon: "drawable://ab_paste",
       action: function(aElement) {
-        if (aElement && (aElement instanceof Ci.nsIDOMNSEditableElement)) {
-          let target = aElement.QueryInterface(Ci.nsIDOMNSEditableElement);
-          target.editor.paste(Ci.nsIClipboard.kGlobalClipboard);
-          target.focus();
+        if (aElement) {
+          let editor = SelectionHandler._getEditor();
+          aElement.focus();
+          editor.paste(Ci.nsIClipboard.kGlobalClipboard);
           SelectionHandler._closeSelection();
           UITelemetry.addEvent("action.1", "actionbar", null, "paste");
         }
@@ -850,7 +850,8 @@ var SelectionHandler = {
 
   isElementEditableText: function (aElement) {
     return (((aElement instanceof HTMLInputElement && aElement.mozIsTextField(false)) ||
-            (aElement instanceof HTMLTextAreaElement)) && !aElement.readOnly);
+            (aElement instanceof HTMLTextAreaElement)) && !aElement.readOnly) ||
+            aElement.contentEditable == "true";
   },
 
   _isNonTextInputElement: function(aElement) {