Bug 1234118 - Delete code for supporting 'do-command' and 'copypaste-docommand'. r=mtseng, r=smaug

These two events are the leftovers for support copy/paste/cut/selectall
operations from old text_selection_dialog.js in Gaia. The code for
handling them can be removed since text_selection_dialog.js was removed
in bug 1221462.

dom/browser-element/BrowserElementChildPreload.js

@@ -68,15 +68,6 @@ const OBSERVED_EVENTS = [
   'invalid-widget'
 ];
 
-const COMMAND_MAP = {
-  'cut': 'cmd_cut',
-  'copy': 'cmd_copyAndCollapseToEnd',
-  'copyImage': 'cmd_copyImage',
-  'copyLink': 'cmd_copyLink',
-  'paste': 'cmd_paste',
-  'selectall': 'cmd_selectAll'
-};
-
 /**
  * The BrowserElementChild implements one half of <iframe mozbrowser>.
  * (The other half is, unsurprisingly, BrowserElementParent.)
@@ -278,7 +269,6 @@ BrowserElementChild.prototype = {
       "activate-next-paint-listener": this._activateNextPaintListener.bind(this),
       "set-input-method-active": this._recvSetInputMethodActive.bind(this),
       "deactivate-next-paint-listener": this._deactivateNextPaintListener.bind(this),
-      "do-command": this._recvDoCommand,
       "find-all": this._recvFindAll.bind(this),
       "find-next": this._recvFindNext.bind(this),
       "clear-match": this._recvClearMatch.bind(this),
@@ -407,15 +397,6 @@ BrowserElementChild.prototype = {
     }
   },
 
-  _isCommandEnabled: function(cmd) {
-    let command = COMMAND_MAP[cmd];
-    if (!command) {
-      return false;
-    }
-
-    return docShell.isCommandEnabled(command);
-  },
-
   /**
    * Spin in a nested event loop until we receive a unblock-modal-prompt message for
    * this window.
@@ -1196,14 +1177,16 @@ BrowserElementChild.prototype = {
   _recvFireCtxCallback: function(data) {
     debug("Received fireCtxCallback message: (" + data.json.menuitem + ")");
 
+    let doCommandIfEnabled = (command) => {
+      if (docShell.isCommandEnabled(command)) {
+        docShell.doCommand(command);
+      }
+    };
+
     if (data.json.menuitem == 'copy-image') {
-      // Set command
-      data.json.command = 'copyImage';
-      this._recvDoCommand(data);
+      doCommandIfEnabled('cmd_copyImage');
     } else if (data.json.menuitem == 'copy-link') {
-      // Set command
-      data.json.command = 'copyLink';
-      this._recvDoCommand(data);
+      doCommandIfEnabled('cmd_copyLink');
     } else if (data.json.menuitem in this._ctxHandlers) {
       this._ctxHandlers[data.json.menuitem].click();
       this._ctxHandlers = {};
@@ -1382,12 +1365,6 @@ BrowserElementChild.prototype = {
     docShell.contentViewer.fullZoom = data.json.zoom;
   },
 
-  _recvDoCommand: function(data) {
-    if (this._isCommandEnabled(data.json.command)) {
-      docShell.doCommand(COMMAND_MAP[data.json.command]);
-    }
-  },
-
   _recvGetAudioChannelVolume: function(data) {
     debug("Received getAudioChannelVolume message: (" + data.json.id + ")");
 

dom/browser-element/BrowserElementCopyPaste.js

@@ -30,7 +30,7 @@ var CopyPasteAssistent = {
     switch (e.data.msg_name) {
       case 'copypaste-do-command':
         if (this._isCommandEnabled(e.data.command)) {
-          docShell.doCommand(COMMAND_MAP[e.data.command]);
+          docShell.doCommand(this.COMMAND_MAP[e.data.command]);
         }
         break;
     }

dom/browser-element/BrowserElementParent.js

@@ -250,7 +250,6 @@ function BrowserElementParent() {
   this._pendingDOMFullscreen = false;
 
   Services.obs.addObserver(this, 'oop-frameloader-crashed', /* ownsWeak = */ true);
-  Services.obs.addObserver(this, 'copypaste-docommand', /* ownsWeak = */ true);
   Services.obs.addObserver(this, 'ask-children-to-execute-copypaste-command', /* ownsWeak = */ true);
   Services.obs.addObserver(this, 'back-docommand', /* ownsWeak = */ true);
 
@@ -1295,11 +1294,6 @@ BrowserElementParent.prototype = {
         this._fireFatalError();
       }
       break;
-    case 'copypaste-docommand':
-      if (this._isAlive() && this._frameElement.isEqualNode(subject.wrappedJSObject)) {
-        this._sendAsyncMsg('do-command', { command: data });
-      }
-      break;
     case 'ask-children-to-execute-copypaste-command':
       if (this._isAlive() && this._frameElement == subject.wrappedJSObject) {
         this._sendAsyncMsg('copypaste-do-command', { command: data });

dom/browser-element/mochitest/browserElement_CopyPaste.js

@@ -86,8 +86,14 @@ function runTest() {
 }
 
 function doCommand(cmd) {
-  Services.obs.notifyObservers({wrappedJSObject: SpecialPowers.unwrap(iframeInner)},
-                               'copypaste-docommand', cmd);
+  var COMMAND_MAP = {
+    'cut': 'cmd_cut',
+    'copy': 'cmd_copyAndCollapseToEnd',
+    'paste': 'cmd_paste',
+    'selectall': 'cmd_selectAll'
+  };
+  var script = 'data:,docShell.doCommand("' + COMMAND_MAP[cmd] + '");';
+  mm.loadFrameScript(script, false);
 }
 
 function dispatchTest(e) {