auto import from //branches/cupcake/...@137873

src/com/android/launcher/LauncherAppWidgetHostView.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2009 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.launcher;
+
+import android.appwidget.AppWidgetHostView;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+
+/**
+ * {@inheritDoc}
+ */
+public class LauncherAppWidgetHostView extends AppWidgetHostView {
+    private boolean mHasPerformedLongPress;
+    
+    private CheckForLongPress mPendingCheckForLongPress;
+    
+    private LayoutInflater mInflater;
+    
+    public LauncherAppWidgetHostView(Context context) {
+        super(context);
+        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    }
+    
+    @Override
+    protected View getErrorView() {
+        return mInflater.inflate(R.layout.appwidget_error, this, false);
+    }
+
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        // Consume any touch events for ourselves after longpress is triggered
+        if (mHasPerformedLongPress) {
+            mHasPerformedLongPress = false;
+            return true;
+        }
+            
+        // Watch for longpress events at this level to make sure
+        // users can always pick up this widget
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN: {
+                postCheckForLongClick();
+                break;
+            }
+            
+            case MotionEvent.ACTION_UP:
+            case MotionEvent.ACTION_CANCEL:
+                mHasPerformedLongPress = false;
+                if (mPendingCheckForLongPress != null) {
+                    removeCallbacks(mPendingCheckForLongPress);
+                }
+                break;
+        }
+        
+        // Otherwise continue letting touch events fall through to children
+        return false;
+    }
+    
+    class CheckForLongPress implements Runnable {
+        private int mOriginalWindowAttachCount;
+
+        public void run() {
+            if ((mParent != null) && hasWindowFocus()
+                    && mOriginalWindowAttachCount == getWindowAttachCount()
+                    && !mHasPerformedLongPress) {
+                if (performLongClick()) {
+                    mHasPerformedLongPress = true;
+                }
+            }
+        }
+
+        public void rememberWindowAttachCount() {
+            mOriginalWindowAttachCount = getWindowAttachCount();
+        }
+    }
+
+    private void postCheckForLongClick() {
+        mHasPerformedLongPress = false;
+
+        if (mPendingCheckForLongPress == null) {
+            mPendingCheckForLongPress = new CheckForLongPress();
+        }
+        mPendingCheckForLongPress.rememberWindowAttachCount();
+        postDelayed(mPendingCheckForLongPress, ViewConfiguration.getLongPressTimeout());
+    }
+}