Implement the new wallpaper manager launcher window.

chrome/browser/resources/chromeos/wallpaper_manager/js/background.js

Index: chrome/browser/resources/chromeos/wallpaper_manager/js/background.js
diff --git a/chrome/browser/resources/chromeos/wallpaper_manager/js/background.js b/chrome/browser/resources/chromeos/wallpaper_manager/js/background.js
new file mode 100644
index 0000000000000000000000000000000000000000..310f5f5fa89e0a9608efb77f4143fd1ee7f86118
--- /dev/null
+++ b/chrome/browser/resources/chromeos/wallpaper_manager/js/background.js
@@ -0,0 +1,48 @@
+// 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.
+
+function WindowStateManager() {
+  this.savedWindow = [];
+}
+
+/**
+ * Minimize all opening windows and save their states.
+ */
+WindowStateManager.prototype.saveStates = function() {
+  var focusedWindowId;
+  chrome.windows.getLastFocused(function(focusedWindow) {
+    focusedWindowId = focusedWindow.id;
+  });
+  this.savedWindow = [];
+  var self = this;
+  chrome.windows.getAll(null, function(windows) {
+    for (var i in windows) {
+      if (windows[i].state != 'minimized')
+        self.savedWindow.push(windows[i]);
+      if (windows[i].id != focusedWindowId)
+        chrome.windows.update(windows[i].id, {'state': 'minimized'},
+                              function() {});
+    }
+  });
+};
+
+/**
+ * Restore the states of all windows.
+ */
+WindowStateManager.prototype.restoreStates = function() {
+  var self = this;
+  chrome.windows.getAll(null, function(windows) {
+    for (var i in windows) {
+      for (var j in self.savedWindow) {
+        if (windows[i].id == self.savedWindow[j].id) {
+          var state = self.savedWindow[j].state;
+          chrome.windows.update(windows[i].id, {'state': state},
+                                function() {});
+        }
+      }
+    }
+  });
+};
+
+var windowStateManager = new WindowStateManager();

[flackr, 2012/07/04 22:20:57]

So does this background page run all the time? If so, can we tell it to shut
down after it finishes restoring window states?

[bshe, 2012/07/05 13:54:50]

According to this:
http://code.google.com/chrome/extensions/background_pages.html

background page has the same lifetime af of the extension. So it should not run
all the time.

On 2012/07/04 22:20:57, flackr wrote: