1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher3; 18 19 import android.content.Context; 20 import android.view.MotionEvent; 21 import android.view.View; 22 import android.widget.FrameLayout; 23 import android.widget.GridLayout; 24 25 /** 26 * The grid based layout used strictly for the widget/wallpaper tab of the AppsCustomize pane 27 */ 28 public class PagedViewGridLayout extends GridLayout implements Page { 29 static final String TAG = "PagedViewGridLayout"; 30 31 private int mCellCountX; 32 private int mCellCountY; 33 private Runnable mOnLayoutListener; 34 PagedViewGridLayout(Context context, int cellCountX, int cellCountY)35 public PagedViewGridLayout(Context context, int cellCountX, int cellCountY) { 36 super(context, null, 0); 37 mCellCountX = cellCountX; 38 mCellCountY = cellCountY; 39 } 40 getCellCountX()41 int getCellCountX() { 42 return mCellCountX; 43 } 44 getCellCountY()45 int getCellCountY() { 46 return mCellCountY; 47 } 48 49 /** 50 * Clears all the key listeners for the individual widgets. 51 */ resetChildrenOnKeyListeners()52 public void resetChildrenOnKeyListeners() { 53 int childCount = getChildCount(); 54 for (int j = 0; j < childCount; ++j) { 55 getChildAt(j).setOnKeyListener(null); 56 } 57 } 58 59 @Override onDetachedFromWindow()60 protected void onDetachedFromWindow() { 61 super.onDetachedFromWindow(); 62 mOnLayoutListener = null; 63 } 64 setOnLayoutListener(Runnable r)65 public void setOnLayoutListener(Runnable r) { 66 mOnLayoutListener = r; 67 } 68 onLayout(boolean changed, int left, int top, int right, int bottom)69 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 70 super.onLayout(changed, left, top, right, bottom); 71 if (mOnLayoutListener != null) { 72 mOnLayoutListener.run(); 73 } 74 } 75 76 @Override onTouchEvent(MotionEvent event)77 public boolean onTouchEvent(MotionEvent event) { 78 boolean result = super.onTouchEvent(event); 79 int count = getPageChildCount(); 80 if (count > 0) { 81 // We only intercept the touch if we are tapping in empty space after the final row 82 View child = getChildOnPageAt(count - 1); 83 int bottom = child.getBottom(); 84 result = result || (event.getY() < bottom); 85 } 86 return result; 87 } 88 89 @Override removeAllViewsOnPage()90 public void removeAllViewsOnPage() { 91 removeAllViews(); 92 mOnLayoutListener = null; 93 setLayerType(LAYER_TYPE_NONE, null); 94 } 95 96 @Override removeViewOnPageAt(int index)97 public void removeViewOnPageAt(int index) { 98 removeViewAt(index); 99 } 100 101 @Override getPageChildCount()102 public int getPageChildCount() { 103 return getChildCount(); 104 } 105 106 @Override getChildOnPageAt(int i)107 public View getChildOnPageAt(int i) { 108 return getChildAt(i); 109 } 110 111 @Override indexOfChildOnPage(View v)112 public int indexOfChildOnPage(View v) { 113 return indexOfChild(v); 114 } 115 116 public static class LayoutParams extends FrameLayout.LayoutParams { LayoutParams(int width, int height)117 public LayoutParams(int width, int height) { 118 super(width, height); 119 } 120 } 121 } 122