1 /* 2 * Copyright (C) 2010 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.email.activity; 18 19 import com.android.email.R; 20 import com.android.emailcommon.provider.Account; 21 import com.android.emailcommon.provider.Mailbox; 22 23 import android.content.Context; 24 import android.content.res.Resources; 25 import android.graphics.drawable.Drawable; 26 import android.util.AttributeSet; 27 import android.widget.RelativeLayout; 28 import android.widget.TextView; 29 30 public class MailboxListItem extends RelativeLayout { 31 // Colors used for drop targets 32 private static Integer sDropAvailableBgColor; 33 private static Integer sDropTrashBgColor; 34 35 /** 36 * Owner account ID for the mailbox, {@link Account#ACCOUNT_ID_COMBINED_VIEW} for a combined 37 * mailbox, or the ID for the current account, if it's an account row. 38 */ 39 public long mAccountId; 40 41 /** 42 * ID for the current mailbox, or {@link Mailbox#NO_MAILBOX} if it's an account row. 43 */ 44 public long mMailboxId; 45 public Integer mMailboxType; 46 /** If {@code true} this item can be used as a drop target. Otherwise, drop is prohibited. */ 47 public boolean mIsValidDropTarget; 48 /** If {@code true} this item can be navigated to. Otherwise, it can just be selected. */ 49 public boolean mIsNavigable; 50 public MailboxFragmentAdapter mAdapter; 51 52 private Drawable mBackground; 53 private TextView mLabelName; 54 private TextView mLabelCount; 55 56 /** 57 * Drawable for an active item for D&D. Note the drawable has state, so we can't share it 58 * between items. 59 * DO NOT use this directly; use {@link #getDropActiveBgDrawable()} instead, as it's lazily- 60 * initialized. 61 */ 62 private Drawable mDropActiveBgDrawable; 63 MailboxListItem(Context context)64 public MailboxListItem(Context context) { 65 super(context); 66 } 67 MailboxListItem(Context context, AttributeSet attrs)68 public MailboxListItem(Context context, AttributeSet attrs) { 69 super(context, attrs); 70 } 71 MailboxListItem(Context context, AttributeSet attrs, int defStyle)72 public MailboxListItem(Context context, AttributeSet attrs, int defStyle) { 73 super(context, attrs, defStyle); 74 } 75 76 @Override onFinishInflate()77 protected void onFinishInflate() { 78 super.onFinishInflate(); 79 mBackground = getBackground(); 80 if (sDropAvailableBgColor == null) { 81 Resources res = getResources(); 82 sDropAvailableBgColor = res.getColor(R.color.mailbox_drop_available_bg_color); 83 sDropTrashBgColor = res.getColor(R.color.mailbox_drop_destructive_bg_color); 84 } 85 mLabelName = (TextView)findViewById(R.id.mailbox_name); 86 mLabelCount = (TextView)findViewById(R.id.message_count); 87 } 88 89 /** 90 * Whether or not this mailbox item is a drop target. Only valid mailboxes or those 91 * not forbidden by the system (see {@link Mailbox#INVALID_DROP_TARGETS}) will return 92 * {@code true}. 93 */ isDropTarget(long itemMailboxId)94 public boolean isDropTarget(long itemMailboxId) { 95 return mIsValidDropTarget && (itemMailboxId != mMailboxId); 96 } 97 98 /** 99 * Returns whether or not this item can be navigated to. 100 */ isNavigable()101 public boolean isNavigable() { 102 return mIsNavigable; 103 } 104 getDropActiveBgDrawable()105 private Drawable getDropActiveBgDrawable() { 106 if (mDropActiveBgDrawable == null) { 107 mDropActiveBgDrawable = 108 getContext().getResources().getDrawable(R.drawable.list_activated_holo); 109 } 110 return mDropActiveBgDrawable; 111 } 112 113 @Override setBackgroundDrawable(Drawable d)114 public void setBackgroundDrawable(Drawable d) { 115 // Don't override with the same instance. 116 // If we don't do the check, something bad will happen to the fade-out animation for 117 // the selected to non-selected transition. (Looks like if you re-set the same 118 // StateListDrawable instance, it'll get confused.) 119 if (d != getBackground()) { 120 super.setBackgroundDrawable(d); 121 } 122 } 123 124 /** 125 * Set the "trash" drop target background. 126 */ setDropTrashBackground()127 public void setDropTrashBackground() { 128 setBackgroundColor(sDropTrashBgColor); 129 } 130 131 /** 132 * Set the "active" drop target background. (Used for the items that the user is hovering over) 133 */ setDropActiveBackground()134 public void setDropActiveBackground() { 135 setBackgroundDrawable(getDropActiveBgDrawable()); 136 } 137 setDropTargetBackground(boolean dragInProgress, long itemMailbox)138 public void setDropTargetBackground(boolean dragInProgress, long itemMailbox) { 139 boolean isBackgroundSet = false; 140 if (dragInProgress) { 141 if (isDropTarget(itemMailbox)) { 142 setBackgroundColor(sDropAvailableBgColor); 143 isBackgroundSet = true; 144 } else { 145 mLabelName.setEnabled(false); 146 mLabelCount.setEnabled(false); 147 } 148 } else { 149 mLabelName.setEnabled(true); 150 mLabelCount.setEnabled(true); 151 } 152 if (!isBackgroundSet) { 153 // Drag not in progress, or it's not a drop target. 154 setBackgroundDrawable(mBackground); 155 } 156 } 157 } 158