Re-land alexbost's experimental offscreenTabs API.

chrome/test/data/extensions/api_test/offscreen_tabs/mouse_events.js

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var testTab = { url: 'a.html', width: 200, height: 200 };
+var testTabId;
+
+var linkX = 11;
+var linkY = 11;
+
+chrome.test.runTests([
+  function init() {
+    chrome.test.listenOnce(
+        chrome.experimental.offscreenTabs.onUpdated,
+        function(tabId, changeInfo, tab) {
+      assertSimilarTabs(testTab, tab);
+    });
+
+    chrome.experimental.offscreenTabs.create(testTab, pass(function(tab) {
+      assertSimilarTabs(testTab, tab);
+      testTabId = tab.id;
+    }));
+  },
+
+  // Test that mouse click events work by watching the tab navigate to b.html
+  // after clicking the link on a.html.
+  function mouseClick() {
+    chrome.test.listenOnce(
+        chrome.experimental.offscreenTabs.onUpdated,
+        function(tabId, changeInfo, tab) {
+      testTab.url = 'b.html';
+      assertEq(maybeExpandURL('b.html'), changeInfo.url);
+      assertEq(testTabId, tabId);
+      assertEq(testTabId, tab.id);
+      assertSimilarTabs(testTab, tab);
+    });
+
+    var mouseEvent = getBaseMouseEvent();
+    mouseEvent.type = 'click';
+
+    chrome.experimental.offscreenTabs.sendMouseEvent(
+        testTabId, mouseEvent, linkX, linkY, pass(function(tab) {
+      assertEq(testTabId, tab.id);
+      assertSimilarTabs(testTab, tab);
+    }));
+  },
+
+  // Scroll the b.html page down 100 px so that the link is at (10,10).
+  function mouseWheel() {
+    var mouseEvent = getBaseMouseEvent();
+    mouseEvent.type = 'mousewheel';
+    mouseEvent.wheelDeltaX = 0;
+    mouseEvent.wheelDeltaY = -100;
+    chrome.experimental.offscreenTabs.sendMouseEvent(
+        testTabId, mouseEvent, 0, 0, pass(function(tab) {
+      assertSimilarTabs(testTab, tab);
+    }));
+  },
+
+  // Now that we scrolled the links into position, sending consecutive
+  // mousedown|up events to the link should navigate the page to c.html.
+  function mouseDownUp() {
+    chrome.test.listenOnce(
+        chrome.experimental.offscreenTabs.onUpdated,
+        function(tabId, changeInfo, tab) {
+      testTab.url = 'c.html';
+      assertEq(testTabId, tabId);
+      assertEq(testTabId, tab.id);
+      assertSimilarTabs(testTab, tab);
+    });
+
+    var mouseEvent = getBaseMouseEvent();
+    mouseEvent.type = 'mousedown';
+    chrome.experimental.offscreenTabs.sendMouseEvent(
+        testTabId, mouseEvent, linkX, linkY, pass(function(tab) {
+      assertSimilarTabs(testTab, tab);
+    }));
+
+    mouseEvent.type = 'mouseup';
+    chrome.experimental.offscreenTabs.sendMouseEvent(
+        testTabId, mouseEvent, linkX, linkY, pass(function(tab) {
+      assertSimilarTabs(testTab, tab);
+    }));
+  }
+
+  // TODO(jstritar): Test event validation and edge cases.
+]);