/*
Copyright © 2013-2014, Silent Circle, LLC.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Any redistribution, use, or modification is done solely for personal
benefit and not for any commercial purpose or for monetary gain
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name Silent Circle nor the names of its contributors may
be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL SILENT CIRCLE, LLC BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This implementation is edited version of original Android sources.
*/
/*
* Copyright (C) 2009 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.silentcircle.contacts.editor;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import com.silentcircle.contacts.model.RawContactDelta;
import com.silentcircle.contacts.model.dataitem.DataKind;
/**
* A class that provides unique view ids for {@link ContentEditorView}, {@link KindSectionView},
* {@link LabeledEditorView} and {@link EditView} on {@link EditContactActivity}.
* It is used to assign a unique but consistent id to each view across {@link EditContactActivity}'s
* lifecycle, so that we can re-construct view state (e.g. focused view) when the screen rotates.
*
* <p>This class is not thread safe.
*/
public final class ViewIdGenerator implements Parcelable {
private static final int INVALID_VIEW_ID = 0;
private static final int INITIAL_VIEW_ID = 1;
public static final int NO_VIEW_INDEX = -1;
private int mNextId;
/**
* Used as a map from the "key" of the views to actual ids. {@link #getId()} generates keys for
* the views.
*/
private Bundle mIdMap = new Bundle();
private static final char KEY_SEPARATOR = '*';
private final static StringBuilder sWorkStringBuilder = new StringBuilder();
public ViewIdGenerator() {
mNextId = INITIAL_VIEW_ID;
}
/** {@inheritDoc} */
public int describeContents() {
return 0;
}
/**
* Returns an id for a view associated with specified contact field.
*
* @param entity {@link com.silentcircle.contacts.model.RawContactDelta} associated with the view
* @param kind {@link com.silentcircle.contacts.model.dataitem.DataKind} associated with the view, or null if none exists.
* @param values {@link com.silentcircle.contacts.model.RawContactDelta.ValuesDelta} associated with the view, or null if none exists.
* @param viewIndex index of the view in the parent {@link Editor}, if it's a leave view.
* Otherwise, pass {@link #NO_VIEW_INDEX}.
*/
public int getId(RawContactDelta entity, DataKind kind, RawContactDelta.ValuesDelta values, int viewIndex) {
final String k = getMapKey(entity, kind, values, viewIndex);
int id = mIdMap.getInt(k, INVALID_VIEW_ID);
if (id == INVALID_VIEW_ID) {
// Make sure the new id won't conflict with auto-generated ids by masking with 0xffff.
id = (mNextId++) & 0xFFFF;
mIdMap.putInt(k, id);
}
return id;
}
private static String getMapKey(RawContactDelta entity, DataKind kind, RawContactDelta.ValuesDelta values, int viewIndex) {
sWorkStringBuilder.setLength(0);
if (entity != null) {
sWorkStringBuilder.append(entity.getValues().getId());
if (kind != null) {
sWorkStringBuilder.append(KEY_SEPARATOR);
sWorkStringBuilder.append(kind.mimeType);
if (values != null) {
sWorkStringBuilder.append(KEY_SEPARATOR);
sWorkStringBuilder.append(values.getId());
if (viewIndex != NO_VIEW_INDEX) {
sWorkStringBuilder.append(KEY_SEPARATOR);
sWorkStringBuilder.append(viewIndex);
}
}
}
}
return sWorkStringBuilder.toString();
}
/** {@Override} */
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mNextId);
dest.writeBundle(mIdMap);
}
private void readFromParcel(Parcel src) {
mNextId = src.readInt();
mIdMap = src.readBundle();
}
public static final Parcelable.Creator<ViewIdGenerator> CREATOR =
new Parcelable.Creator<ViewIdGenerator>() {
public ViewIdGenerator createFromParcel(Parcel in) {
final ViewIdGenerator vig = new ViewIdGenerator();
vig.readFromParcel(in);
return vig;
}
public ViewIdGenerator[] newArray(int size) {
return new ViewIdGenerator[size];
}
};
}