1 files changed, 103 insertions, 0 deletions
diff --git a/packages/StatusBarPhone/src/com/android/policy/statusbar/phone/CommandQueue.java b/packages/StatusBarPhone/src/com/android/policy/statusbar/phone/CommandQueue.java
new file mode 100644
index 0000000..b21f65d
--- /dev/null
+++ b/packages/StatusBarPhone/src/com/android/policy/statusbar/phone/CommandQueue.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.policy.statusbar.phone;
+
+import android.os.Handler;
+import android.os.Message;
+
+import com.android.internal.statusbar.IStatusBar;
+import com.android.internal.statusbar.StatusBarIcon;
+import com.android.internal.statusbar.StatusBarIconList;
+
+class CommandQueue extends IStatusBar.Stub {
+
+    private static final int MSG_MASK = 0xffff0000;
+    private static final int INDEX_MASK = 0x0000ffff;
+
+    private static final int MSG_ICON = 0x00010000;
+    private static final int OP_SET_ICON = 1;
+    private static final int OP_REMOVE_ICON = 2;
+
+    private StatusBarIconList mList;
+    private Callbacks mCallbacks;
+    private Handler mHandler = new H();
+
+    /**
+     * These methods are called back on the main thread.
+     */
+    public interface Callbacks {
+        public void addIcon(String slot, int index, int viewIndex, StatusBarIcon icon);
+        public void updateIcon(String slot, int index, int viewIndex,
+                StatusBarIcon old, StatusBarIcon icon);
+        public void removeIcon(String slot, int index, int viewIndex);
+    }
+
+    public CommandQueue(Callbacks callbacks, StatusBarIconList list) {
+        mCallbacks = callbacks;
+        mList = list;
+    }
+
+    public void setIcon(int index, StatusBarIcon icon) {
+        synchronized (mList) {
+            int what = MSG_ICON | index;
+            mHandler.removeMessages(what);
+            mHandler.obtainMessage(what, OP_SET_ICON, 0, icon.clone()).sendToTarget();
+        }
+    }
+
+    public void removeIcon(int index) {
+        synchronized (mList) {
+            int what = MSG_ICON | index;
+            mHandler.removeMessages(what);
+            mHandler.obtainMessage(what, OP_REMOVE_ICON, 0, null).sendToTarget();
+        }
+    }
+
+    private final class H extends Handler {
+        public void handleMessage(Message msg) {
+            int what = msg.what & MSG_MASK;
+            switch (msg.what) {
+                case MSG_ICON: {
+                    int index = msg.what & INDEX_MASK;
+                    int viewIndex = mList.getViewIndex(index);
+                    switch (msg.arg1) {
+                        case OP_SET_ICON: {
+                            StatusBarIcon icon = (StatusBarIcon)msg.obj;
+                            StatusBarIcon old = mList.getIcon(index);
+                            if (old == null) {
+                                mList.setIcon(index, icon);
+                                mCallbacks.addIcon(mList.getSlot(index), index, viewIndex, icon);
+                            } else {
+                                mList.setIcon(index, icon);
+                                mCallbacks.updateIcon(mList.getSlot(index), index, viewIndex,
+                                        old, icon);
+                            }
+                            break;
+                        }
+                        case OP_REMOVE_ICON:
+                            mList.removeIcon(index);
+                            mCallbacks.removeIcon(mList.getSlot(index), index, viewIndex);
+                            break;
+                    }
+                    break;
+               }
+            }
+        }
+    }
+}
+
+