1 /* 2 * Copyright (C) 2015 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 package com.android.messaging.ui.attachmentchooser; 17 18 import android.content.Context; 19 import android.graphics.Rect; 20 import android.util.AttributeSet; 21 import android.view.LayoutInflater; 22 import android.view.TouchDelegate; 23 import android.view.View; 24 import android.widget.CheckBox; 25 import android.widget.FrameLayout; 26 27 import com.android.messaging.R; 28 import com.android.messaging.datamodel.data.MessagePartData; 29 import com.android.messaging.ui.AttachmentPreviewFactory; 30 import com.android.messaging.util.Assert; 31 import com.google.common.annotations.VisibleForTesting; 32 33 /** 34 * Shows an item in the attachment picker grid. 35 */ 36 public class AttachmentGridItemView extends FrameLayout { 37 public interface HostInterface { isItemSelected(MessagePartData attachment)38 boolean isItemSelected(MessagePartData attachment); onItemCheckedChanged(AttachmentGridItemView view, MessagePartData attachment)39 void onItemCheckedChanged(AttachmentGridItemView view, MessagePartData attachment); onItemClicked(AttachmentGridItemView view, MessagePartData attachment)40 void onItemClicked(AttachmentGridItemView view, MessagePartData attachment); 41 } 42 43 @VisibleForTesting 44 MessagePartData mAttachmentData; 45 private FrameLayout mAttachmentViewContainer; 46 private CheckBox mCheckBox; 47 private HostInterface mHostInterface; 48 AttachmentGridItemView(final Context context, final AttributeSet attrs)49 public AttachmentGridItemView(final Context context, final AttributeSet attrs) { 50 super(context, attrs); 51 } 52 53 @Override onFinishInflate()54 protected void onFinishInflate() { 55 super.onFinishInflate(); 56 mAttachmentViewContainer = (FrameLayout) findViewById(R.id.attachment_container); 57 mCheckBox = (CheckBox) findViewById(R.id.checkbox); 58 mCheckBox.setOnClickListener(new OnClickListener() { 59 @Override 60 public void onClick(final View v) { 61 mHostInterface.onItemCheckedChanged(AttachmentGridItemView.this, mAttachmentData); 62 } 63 }); 64 setOnClickListener(new OnClickListener() { 65 @Override 66 public void onClick(final View v) { 67 mHostInterface.onItemClicked(AttachmentGridItemView.this, mAttachmentData); 68 } 69 }); 70 addOnLayoutChangeListener(new OnLayoutChangeListener() { 71 @Override 72 public void onLayoutChange(View v, int left, int top, int right, int bottom, 73 int oldLeft, int oldTop, int oldRight, int oldBottom) { 74 // Enlarge the clickable region for the checkbox. 75 final int touchAreaIncrease = getResources().getDimensionPixelOffset( 76 R.dimen.attachment_grid_checkbox_area_increase); 77 final Rect region = new Rect(); 78 mCheckBox.getHitRect(region); 79 region.inset(-touchAreaIncrease, -touchAreaIncrease); 80 setTouchDelegate(new TouchDelegate(region, mCheckBox)); 81 } 82 }); 83 } 84 85 @Override onMeasure(final int widthMeasureSpec, final int heightMeasureSpec)86 protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) { 87 // The grid view auto-fits the columns, so we want to let the height match the width 88 // to make the attachment preview square. 89 super.onMeasure(widthMeasureSpec, widthMeasureSpec); 90 } 91 bind(final MessagePartData attachment, final HostInterface hostInterface)92 public void bind(final MessagePartData attachment, final HostInterface hostInterface) { 93 Assert.isTrue(attachment.isAttachment()); 94 mHostInterface = hostInterface; 95 updateSelectedState(); 96 if (mAttachmentData == null || !mAttachmentData.equals(attachment)) { 97 mAttachmentData = attachment; 98 updateAttachmentView(); 99 } 100 } 101 102 @VisibleForTesting testGetHostInterface()103 HostInterface testGetHostInterface() { 104 return mHostInterface; 105 } 106 updateSelectedState()107 public void updateSelectedState() { 108 mCheckBox.setChecked(mHostInterface.isItemSelected(mAttachmentData)); 109 } 110 updateAttachmentView()111 private void updateAttachmentView() { 112 mAttachmentViewContainer.removeAllViews(); 113 final LayoutInflater inflater = LayoutInflater.from(getContext()); 114 final View attachmentView = AttachmentPreviewFactory.createAttachmentPreview(inflater, 115 mAttachmentData, mAttachmentViewContainer, 116 AttachmentPreviewFactory.TYPE_CHOOSER_GRID, true /* startImageRequest */, null); 117 mAttachmentViewContainer.addView(attachmentView); 118 } 119 } 120