Bug 1079728 - Ensure that the blur message is sent after removing focus. r=yxl

dom/inputmethod/forms.js

@@ -216,7 +216,7 @@ let FormAssistant = {
     'range'
   ]),
 
-  isKeyboardOpened: false,
+  isHandlingFocus: false,
   selectionStart: -1,
   selectionEnd: -1,
   textBeforeCursor: "",
@@ -304,7 +304,7 @@ let FormAssistant = {
           });
         });
         if (del && element === self.focusedElement) {
-          self.hideKeyboard();
+          self.unhandleFocus();
           self.selectionStart = -1;
           self.selectionEnd = -1;
         }
@@ -351,7 +351,7 @@ let FormAssistant = {
     if (this._editing) {
       return;
     }
-    this.sendKeyboardState(this.focusedElement);
+    this.sendInputState(this.focusedElement);
   },
 
   handleEvent: function fa_handleEvent(evt) {
@@ -379,13 +379,13 @@ let FormAssistant = {
         }
 
         if (isContentEditable(target)) {
-          this.showKeyboard(this.getTopLevelEditable(target));
+          this.handleFocus(this.getTopLevelEditable(target));
           this.updateSelection();
           break;
         }
 
         if (this.isFocusableElement(target)) {
-          this.showKeyboard(target);
+          this.handleFocus(target);
           this.updateSelection();
         }
         break;
@@ -406,14 +406,14 @@ let FormAssistant = {
 
       case "blur":
         if (this.focusedElement) {
-          this.hideKeyboard();
+          this.unhandleFocus();
           this.selectionStart = -1;
           this.selectionEnd = -1;
         }
         break;
 
       case "resize":
-        if (!this.isKeyboardOpened)
+        if (!this.isHandlingFocus)
           return;
 
         if (this.scrollIntoViewTimeout) {
@@ -672,7 +672,7 @@ let FormAssistant = {
 
   },
 
-  showKeyboard: function fa_showKeyboard(target) {
+  handleFocus: function fa_handleFocus(target) {
     if (this.focusedElement === target)
       return;
 
@@ -682,18 +682,17 @@ let FormAssistant = {
     this.setFocusedElement(target);
 
     let count = this._focusCounter;
-    this.waitForNextTick(function fa_showKeyboardSync() {
+    this.waitForNextTick(function fa_handleFocusSync() {
       if (count !== this._focusCounter) {
         return;
       }
 
-      let kbOpened = this.sendKeyboardState(target);
+      let isHandlingFocus = this.sendInputState(target);
-      if (this.isTextInputElement(target))
+      this.isHandlingFocus = isHandlingFocus;
-        this.isKeyboardOpened = kbOpened;
     }.bind(this));
   },
 
-  hideKeyboard: function fa_hideKeyboard() {
+  unhandleFocus: function fa_unhandleFocus() {
     this.setFocusedElement(null);
 
     let count = this._focusCounter;
@@ -701,13 +700,13 @@ let FormAssistant = {
     // Wait for the next tick before unset the focused element and etc.
     // If the user move from one input from another,
     // the remote process should get one Forms:Input message instead of two.
-    this.waitForNextTick(function fa_hideKeyboardSync() {
+    this.waitForNextTick(function fa_unhandleFocusSync() {
       if (count !== this._focusCounter ||
-          !this.isKeyboardOpened) {
+          !this.isHandlingFocus) {
         return;
       }
 
-      this.isKeyboardOpened = false;
+      this.isHandlingFocus = false;
       sendAsyncMessage("Forms:Input", { "type": "blur" });
     }.bind(this));
   },
@@ -725,12 +724,6 @@ let FormAssistant = {
             !this.ignoredInputTypes.has(element.type));
   },
 
-  isTextInputElement: function fa_isTextInputElement(element) {
-    return element instanceof HTMLInputElement ||
-           element instanceof HTMLTextAreaElement ||
-           isContentEditable(element);
-  },
-
   getTopLevelEditable: function fa_getTopLevelEditable(element) {
     function retrieveTopLevelEditable(element) {
       while (element && !isContentEditable(element))
@@ -742,7 +735,7 @@ let FormAssistant = {
     return retrieveTopLevelEditable(element) || element;
   },
 
-  sendKeyboardState: function(element) {
+  sendInputState: function(element) {
     // FIXME/bug 729623: work around apparent bug in the IME manager
     // in gecko.
     let readonly = element.getAttribute("readonly");

dom/inputmethod/mochitest/mochitest.ini

@@ -24,3 +24,4 @@ support-files =
 [test_delete_focused_element.html]
 [test_sendkey_cancel.html]
 [test_two_inputs.html]
+[test_two_selects.html]

dom/inputmethod/mochitest/test_two_selects.html

@@ -0,0 +1,151 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1079728
+-->
+<head>
+  <title>Test switching between two inputs</title>
+  <script type="application/javascript;version=1.7" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript;version=1.7" src="inputmethod_common.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1079728">Mozilla Bug 1079728</a>
+<p id="display"></p>
+<pre id="test">
+<script class="testbody" type="application/javascript;version=1.7">
+
+inputmethod_setup(function() {
+  runTest();
+});
+
+let appFrameScript = function appFrameScript() {
+  let select1 = content.document.body.firstElementChild;
+  let select2 = content.document.body.children[1];
+
+  let i = 1;
+
+  select1.focus();
+
+  addMessageListener('test:next', function() {
+    i++;
+    switch (i) {
+      case 2:
+        select2.focus();
+
+        break;
+
+      case 3:
+        select2.blur();
+        select2.focus();
+
+        break;
+
+      case 4:
+        select2.blur();
+
+        break;
+
+      case 5:
+        select2.focus();
+        select2.blur();
+
+        select1.focus();
+
+        break;
+
+      case 6:
+        select1.blur();
+
+        break;
+    }
+  });
+};
+
+function runTest() {
+  let im = navigator.mozInputMethod;
+
+  let i = 0;
+  im.oninputcontextchange = function(evt) {
+    var inputcontext = navigator.mozInputMethod.inputcontext;
+
+    i++;
+    switch (i) {
+      // focus on the first input receives the first input context.
+      case 1:
+        ok(!!inputcontext, 'Receving the first input context');
+        is(inputcontext.textAfterCursor, 'First');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // focus on the second input (implicitly blur the first input)
+      // results the second input context.
+      case 2:
+        ok(!!inputcontext, 'Receving the second input context');
+        is(inputcontext.textAfterCursor, 'Second');
+
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // blur and re-focus on the second input results updated
+      // input context for the second input.
+      case 3:
+        ok(!!inputcontext, 'Receving the second input context');
+        is(inputcontext.textAfterCursor, 'Second');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // blur on the second input results null input context
+      case 4:
+        is(inputcontext, null, 'Receving null inputcontext');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // focus and blur on the second input sends no message;
+      // focus on the first input receives the first input context.
+      case 5:
+        ok(!!inputcontext, 'Receving the first input context');
+        is(inputcontext.textAfterCursor, 'First');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // blur on the first input results null input context
+      case 6:
+        is(inputcontext, null, 'Receving null inputcontext');
+
+        inputmethod_cleanup();
+        break;
+
+      default:
+        ok(false, 'Receving extra inputcontextchange calls');
+        inputmethod_cleanup();
+
+        break;
+    }
+  };
+
+  // Set current page as an input method.
+  SpecialPowers.wrap(im).setActive(true);
+
+  let iframe = document.createElement('iframe');
+  iframe.src = 'data:text/html,<html><body><select><option>First</option></select><select><option>Second</option></select></html>';
+  iframe.setAttribute('mozbrowser', true);
+  document.body.appendChild(iframe);
+
+  let mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+
+  iframe.addEventListener('mozbrowserloadend', function() {
+    mm.loadFrameScript('data:,(' + encodeURIComponent(appFrameScript.toString()) + ')();', false);
+  });
+}
+
+</script>
+</pre>
+</body>
+</html>
+