src/com/android/launcher2/AllAppsGridView.java

/*
 * 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.android.launcher2;

import android.widget.GridView;
import android.widget.AdapterView;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.graphics.BitmapFactory;
import android.graphics.Bitmap;
import android.graphics.Paint;
import android.graphics.Canvas;

public class AllAppsGridView extends GridView implements AdapterView.OnItemClickListener,
        AdapterView.OnItemLongClickListener, DragSource {

    private DragController mDragController;
    private Launcher mLauncher;
    private boolean mDraw = true;

    public AllAppsGridView(Context context) {
        super(context);
    }

    public AllAppsGridView(Context context, AttributeSet attrs) {
        this(context, attrs, com.android.internal.R.attr.gridViewStyle);
    }

    public AllAppsGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onFinishInflate() {
        setOnItemClickListener(this);
        setOnItemLongClickListener(this);
    }

    public void onItemClick(AdapterView parent, View v, int position, long id) {
        ApplicationInfo app = (ApplicationInfo) parent.getItemAtPosition(position);
        mLauncher.startActivitySafely(app.intent);
    }

    public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
        if (!view.isInTouchMode()) {
            return false;
        }

        ApplicationInfo app = (ApplicationInfo) parent.getItemAtPosition(position);
        app = new ApplicationInfo(app);

        mDragController.startDrag(view, this, app, DragController.DRAG_ACTION_COPY);
        mLauncher.closeAllAppsDialog(true);
        mDraw = false;
        invalidate();
        return true;
    }

    @Override
    protected void dispatchDraw(Canvas canvas) {
        if (mDraw) {
            super.dispatchDraw(canvas);
        }
    }

    public void setDragController(DragController dragController) {
        mDragController = dragController;
    }

    public void onDropCompleted(View target, boolean success) {
        mLauncher.closeAllAppsDialog(false);
    }

    void setLauncher(Launcher launcher) {
        mLauncher = launcher;
    }

    void onPrepareDialog() {
        mDraw = true;
    }
}