Initial checkin of AOSP Messaging app.
b/23110861 Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1
This commit is contained in:
Mike Dodd
@@ -0,0 +1,315 @@
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.messaging.ui.mediapicker;
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import android.content.Context;
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import android.graphics.Rect;
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import android.net.Uri;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.support.v4.util.ArrayMap;
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import android.util.AttributeSet;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import com.android.messaging.R;
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import com.android.messaging.datamodel.binding.BindingBase;
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import com.android.messaging.datamodel.binding.ImmutableBindingRef;
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import com.android.messaging.datamodel.data.DraftMessageData;
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import com.android.messaging.datamodel.data.GalleryGridItemData;
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import com.android.messaging.datamodel.data.MessagePartData;
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import com.android.messaging.datamodel.data.DraftMessageData.DraftMessageDataListener;
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import com.android.messaging.ui.PersistentInstanceState;
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import com.android.messaging.util.Assert;
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import com.android.messaging.util.ContentType;
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import com.android.messaging.util.LogUtil;
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import java.util.Iterator;
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import java.util.Map;
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/**
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* Shows a list of galley images from external storage in a GridView with multi-select
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* capabilities, and with the option to intent out to a standalone image picker.
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*/
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public class GalleryGridView extends MediaPickerGridView implements
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GalleryGridItemView.HostInterface,
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PersistentInstanceState,
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DraftMessageDataListener {
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/**
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* Implemented by the owner of this GalleryGridView instance to communicate on image
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* picking and multi-image selection events.
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*/
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public interface GalleryGridViewListener {
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void onDocumentPickerItemClicked();
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void onItemSelected(MessagePartData item);
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void onItemUnselected(MessagePartData item);
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void onConfirmSelection();
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void onUpdate();
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}
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private GalleryGridViewListener mListener;
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// TODO: Consider putting this into the data model object if we add more states.
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private final ArrayMap<Uri, MessagePartData> mSelectedImages;
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private boolean mIsMultiSelectMode = false;
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private ImmutableBindingRef<DraftMessageData> mDraftMessageDataModel;
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public GalleryGridView(final Context context, final AttributeSet attrs) {
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super(context, attrs);
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mSelectedImages = new ArrayMap<Uri, MessagePartData>();
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}
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public void setHostInterface(final GalleryGridViewListener hostInterface) {
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mListener = hostInterface;
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}
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public void setDraftMessageDataModel(final BindingBase<DraftMessageData> dataModel) {
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mDraftMessageDataModel = BindingBase.createBindingReference(dataModel);
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mDraftMessageDataModel.getData().addListener(this);
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}
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@Override
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public void onItemClicked(final View view, final GalleryGridItemData data,
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final boolean longClick) {
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if (data.isDocumentPickerItem()) {
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mListener.onDocumentPickerItemClicked();
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} else if (ContentType.isMediaType(data.getContentType())) {
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if (longClick) {
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// Turn on multi-select mode when an item is long-pressed.
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setMultiSelectEnabled(true);
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}
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final Rect startRect = new Rect();
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view.getGlobalVisibleRect(startRect);
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if (isMultiSelectEnabled()) {
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toggleItemSelection(startRect, data);
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} else {
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mListener.onItemSelected(data.constructMessagePartData(startRect));
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}
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} else {
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LogUtil.w(LogUtil.BUGLE_TAG,
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"Selected item has invalid contentType " + data.getContentType());
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}
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}
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@Override
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public boolean isItemSelected(final GalleryGridItemData data) {
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return mSelectedImages.containsKey(data.getImageUri());
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}
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int getSelectionCount() {
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return mSelectedImages.size();
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}
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@Override
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public boolean isMultiSelectEnabled() {
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return mIsMultiSelectMode;
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}
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private void toggleItemSelection(final Rect startRect, final GalleryGridItemData data) {
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Assert.isTrue(isMultiSelectEnabled());
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if (isItemSelected(data)) {
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final MessagePartData item = mSelectedImages.remove(data.getImageUri());
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mListener.onItemUnselected(item);
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if (mSelectedImages.size() == 0) {
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// No image is selected any more, turn off multi-select mode.
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setMultiSelectEnabled(false);
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}
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} else {
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final MessagePartData item = data.constructMessagePartData(startRect);
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mSelectedImages.put(data.getImageUri(), item);
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mListener.onItemSelected(item);
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}
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invalidateViews();
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}
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private void toggleMultiSelect() {
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mIsMultiSelectMode = !mIsMultiSelectMode;
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invalidateViews();
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}
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private void setMultiSelectEnabled(final boolean enabled) {
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if (mIsMultiSelectMode != enabled) {
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toggleMultiSelect();
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}
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}
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private boolean canToggleMultiSelect() {
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// We allow the user to toggle multi-select mode only when nothing has selected. If
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// something has been selected, we show a confirm button instead.
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return mSelectedImages.size() == 0;
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}
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public void onCreateOptionsMenu(final MenuInflater inflater, final Menu menu) {
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inflater.inflate(R.menu.gallery_picker_menu, menu);
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final MenuItem toggleMultiSelect = menu.findItem(R.id.action_multiselect);
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final MenuItem confirmMultiSelect = menu.findItem(R.id.action_confirm_multiselect);
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final boolean canToggleMultiSelect = canToggleMultiSelect();
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toggleMultiSelect.setVisible(canToggleMultiSelect);
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confirmMultiSelect.setVisible(!canToggleMultiSelect);
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}
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public boolean onOptionsItemSelected(final MenuItem item) {
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switch (item.getItemId()) {
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case R.id.action_multiselect:
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Assert.isTrue(canToggleMultiSelect());
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toggleMultiSelect();
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return true;
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case R.id.action_confirm_multiselect:
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Assert.isTrue(!canToggleMultiSelect());
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mListener.onConfirmSelection();
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return true;
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}
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return false;
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}
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@Override
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public void onDraftChanged(final DraftMessageData data, final int changeFlags) {
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mDraftMessageDataModel.ensureBound(data);
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// Whenever attachment changed, refresh selection state to remove those that are not
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// selected.
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if ((changeFlags & DraftMessageData.ATTACHMENTS_CHANGED) ==
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DraftMessageData.ATTACHMENTS_CHANGED) {
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refreshImageSelectionStateOnAttachmentChange();
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}
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}
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@Override
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public void onDraftAttachmentLimitReached(final DraftMessageData data) {
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mDraftMessageDataModel.ensureBound(data);
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// Whenever draft attachment limit is reach, refresh selection state to remove those
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// not actually added to draft.
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refreshImageSelectionStateOnAttachmentChange();
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}
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@Override
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public void onDraftAttachmentLoadFailed() {
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// Nothing to do since the failed attachment gets removed automatically.
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}
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private void refreshImageSelectionStateOnAttachmentChange() {
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boolean changed = false;
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final Iterator<Map.Entry<Uri, MessagePartData>> iterator =
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mSelectedImages.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry<Uri, MessagePartData> entry = iterator.next();
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if (!mDraftMessageDataModel.getData().containsAttachment(entry.getKey())) {
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iterator.remove();
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changed = true;
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}
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}
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if (changed) {
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mListener.onUpdate();
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invalidateViews();
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}
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}
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@Override // PersistentInstanceState
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public Parcelable saveState() {
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return onSaveInstanceState();
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}
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@Override // PersistentInstanceState
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public void restoreState(final Parcelable restoredState) {
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onRestoreInstanceState(restoredState);
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invalidateViews();
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}
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@Override
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public Parcelable onSaveInstanceState() {
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final Parcelable superState = super.onSaveInstanceState();
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final SavedState savedState = new SavedState(superState);
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savedState.isMultiSelectMode = mIsMultiSelectMode;
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savedState.selectedImages = mSelectedImages.values()
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.toArray(new MessagePartData[mSelectedImages.size()]);
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return savedState;
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}
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@Override
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public void onRestoreInstanceState(final Parcelable state) {
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if (!(state instanceof SavedState)) {
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super.onRestoreInstanceState(state);
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return;
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}
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final SavedState savedState = (SavedState) state;
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super.onRestoreInstanceState(savedState.getSuperState());
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mIsMultiSelectMode = savedState.isMultiSelectMode;
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mSelectedImages.clear();
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for (int i = 0; i < savedState.selectedImages.length; i++) {
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final MessagePartData selectedImage = savedState.selectedImages[i];
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mSelectedImages.put(selectedImage.getContentUri(), selectedImage);
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}
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}
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@Override // PersistentInstanceState
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public void resetState() {
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mSelectedImages.clear();
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mIsMultiSelectMode = false;
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invalidateViews();
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}
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public static class SavedState extends BaseSavedState {
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boolean isMultiSelectMode;
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MessagePartData[] selectedImages;
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SavedState(final Parcelable superState) {
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super(superState);
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}
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private SavedState(final Parcel in) {
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super(in);
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isMultiSelectMode = in.readInt() == 1 ? true : false;
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// Read parts
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final int partCount = in.readInt();
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selectedImages = new MessagePartData[partCount];
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for (int i = 0; i < partCount; i++) {
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selectedImages[i] = ((MessagePartData) in.readParcelable(
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MessagePartData.class.getClassLoader()));
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}
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}
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@Override
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public void writeToParcel(final Parcel out, final int flags) {
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super.writeToParcel(out, flags);
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out.writeInt(isMultiSelectMode ? 1 : 0);
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// Write parts
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out.writeInt(selectedImages.length);
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for (final MessagePartData image : selectedImages) {
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out.writeParcelable(image, flags);
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}
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}
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public static final Parcelable.Creator<SavedState> CREATOR =
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new Parcelable.Creator<SavedState>() {
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@Override
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public SavedState createFromParcel(final Parcel in) {
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return new SavedState(in);
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}
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@Override
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public SavedState[] newArray(final int size) {
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return new SavedState[size];
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}
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};
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}
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}
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