Added Android code

[wl-app.git] / Android / webViewMarker / src / main / java / com / blahti / drag / DragLayer.java

diff --git a/Android/webViewMarker/src/main/java/com/blahti/drag/DragLayer.java b/Android/webViewMarker/src/main/java/com/blahti/drag/DragLayer.java
new file mode 100755 (executable)
index 0000000..050f657
--- /dev/null
+++ b/Android/webViewMarker/src/main/java/com/blahti/drag/DragLayer.java
@@ -0,0 +1,101 @@
+/*
+ * This is a modified version of a class from the Android Open Source Project. 
+ * The original copyright and license information follows.
+ * 
+ * Copyright (C) 2008 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.blahti.drag;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.KeyEvent;
+import android.view.View;
+
+/**
+ * A ViewGroup that coordinates dragging across its descendants.
+ *
+ * <p> This class used DragLayer in the Android Launcher activity as a model.
+ * It is a bit different in several respects:
+ * (1) It extends MyAbsoluteLayout rather than FrameLayout; (2) it implements DragSource and DropTarget methods
+ * that were done in a separate Workspace class in the Launcher.
+ */
+public class DragLayer extends MyAbsoluteLayout implements DragSource, DropTarget {
+    private DragController mDragController;
+
+    public DragLayer (Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event);
+    }
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        return mDragController.onInterceptTouchEvent(ev);
+    }
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        return mDragController.onTouchEvent(ev);
+    }
+    @Override
+    public boolean dispatchUnhandledMove(View focused, int direction) {
+        return mDragController.dispatchUnhandledMove(focused, direction);
+    }
+
+    // Interfaces of DragSource
+    @Override
+    public boolean allowDrag() {
+        return true;
+    }
+    @Override
+    public void setDragController(DragController controller) {
+        mDragController = controller;
+    }
+    @Override
+    public void onDropCompleted(View target, boolean success) {
+    }
+
+    // Interfaces of DropTarget
+    @Override
+    public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo) {
+        final View v = (View)dragInfo;
+        final int w = v.getWidth();
+        final int h = v.getHeight();
+        final int left = x - xOffset;
+        final int top = y - yOffset;
+        final DragLayer.LayoutParams lp = new DragLayer.LayoutParams (w, h, left, top);
+        updateViewLayout(v, lp);
+    }
+    @Override
+    public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo) {
+    }
+    @Override
+    public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo) {
+    }
+    @Override
+    public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo) {
+    }
+    @Override
+    public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo) {
+        return true;
+    }
+    @Override
+    public Rect estimateDropLocation(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo, Rect recycle) {
+        return null;
+    }
+}