LatinIME/java/src/com/android/inputmethod/keyboard/internal/KeyStyles.java

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/*
* Copyright (C) 2010 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.android.inputmethod.keyboard.internal;
import android.content.res.TypedArray;
import android.util.Log;
import com.android.inputmethod.keyboard.Keyboard;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.XmlParseUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.util.HashMap;
public class KeyStyles {
private static final String TAG = KeyStyles.class.getSimpleName();
private static final boolean DEBUG = false;
private final HashMap<String, DeclaredKeyStyle> mStyles =
new HashMap<String, DeclaredKeyStyle>();
private static final KeyStyle EMPTY_KEY_STYLE = new EmptyKeyStyle();
public interface KeyStyle {
public String[] getStringArray(TypedArray a, int index);
public String getString(TypedArray a, int index);
public int getInt(TypedArray a, int index, int defaultValue);
public int getFlag(TypedArray a, int index);
}
static class EmptyKeyStyle implements KeyStyle {
@Override
public String[] getStringArray(TypedArray a, int index) {
return KeyStyles.parseStringArray(a, index);
}
@Override
public String getString(TypedArray a, int index) {
return a.getString(index);
}
@Override
public int getInt(TypedArray a, int index, int defaultValue) {
return a.getInt(index, defaultValue);
}
@Override
public int getFlag(TypedArray a, int index) {
return a.getInt(index, 0);
}
}
static class DeclaredKeyStyle implements KeyStyle {
private final HashMap<Integer, Object> mStyleAttributes = new HashMap<Integer, Object>();
@Override
public String[] getStringArray(TypedArray a, int index) {
if (a.hasValue(index)) {
return parseStringArray(a, index);
}
return (String[])mStyleAttributes.get(index);
}
@Override
public String getString(TypedArray a, int index) {
if (a.hasValue(index)) {
return a.getString(index);
}
return (String)mStyleAttributes.get(index);
}
@Override
public int getInt(TypedArray a, int index, int defaultValue) {
if (a.hasValue(index)) {
return a.getInt(index, defaultValue);
}
final Integer styleValue = (Integer)mStyleAttributes.get(index);
return styleValue != null ? styleValue : defaultValue;
}
@Override
public int getFlag(TypedArray a, int index) {
final int value = a.getInt(index, 0);
final Integer styleValue = (Integer)mStyleAttributes.get(index);
return (styleValue != null ? styleValue : 0) | value;
}
void readKeyAttributes(TypedArray keyAttr) {
// TODO: Currently not all Key attributes can be declared as style.
readInt(keyAttr, R.styleable.Keyboard_Key_code);
readInt(keyAttr, R.styleable.Keyboard_Key_altCode);
readString(keyAttr, R.styleable.Keyboard_Key_keyLabel);
readString(keyAttr, R.styleable.Keyboard_Key_keyOutputText);
readString(keyAttr, R.styleable.Keyboard_Key_keyHintLabel);
readStringArray(keyAttr, R.styleable.Keyboard_Key_moreKeys);
readStringArray(keyAttr, R.styleable.Keyboard_Key_additionalMoreKeys);
readFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelFlags);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIcon);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIconDisabled);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIconPreview);
readInt(keyAttr, R.styleable.Keyboard_Key_maxMoreKeysColumn);
readInt(keyAttr, R.styleable.Keyboard_Key_backgroundType);
readFlag(keyAttr, R.styleable.Keyboard_Key_keyActionFlags);
}
private void readString(TypedArray a, int index) {
if (a.hasValue(index)) {
mStyleAttributes.put(index, a.getString(index));
}
}
private void readInt(TypedArray a, int index) {
if (a.hasValue(index)) {
mStyleAttributes.put(index, a.getInt(index, 0));
}
}
private void readFlag(TypedArray a, int index) {
final Integer value = (Integer)mStyleAttributes.get(index);
if (a.hasValue(index)) {
mStyleAttributes.put(index, a.getInt(index, 0) | (value != null ? value : 0));
}
}
private void readStringArray(TypedArray a, int index) {
final String[] value = parseStringArray(a, index);
if (value != null) {
mStyleAttributes.put(index, value);
}
}
void addParentStyleAttributes(DeclaredKeyStyle parentStyle) {
mStyleAttributes.putAll(parentStyle.mStyleAttributes);
}
}
static String[] parseStringArray(TypedArray a, int index) {
if (a.hasValue(index)) {
return KeySpecParser.parseCsvString(
a.getString(index), a.getResources(), R.string.english_ime_name);
}
return null;
}
public void parseKeyStyleAttributes(TypedArray keyStyleAttr, TypedArray keyAttrs,
XmlPullParser parser) throws XmlPullParserException {
final String styleName = keyStyleAttr.getString(R.styleable.Keyboard_KeyStyle_styleName);
if (DEBUG) {
Log.d(TAG, String.format("<%s styleName=%s />",
Keyboard.Builder.TAG_KEY_STYLE, styleName));
}
if (mStyles.containsKey(styleName)) {
throw new XmlParseUtils.ParseException(
"duplicate key style declared: " + styleName, parser);
}
final DeclaredKeyStyle style = new DeclaredKeyStyle();
if (keyStyleAttr.hasValue(R.styleable.Keyboard_KeyStyle_parentStyle)) {
final String parentStyle = keyStyleAttr.getString(
R.styleable.Keyboard_KeyStyle_parentStyle);
final DeclaredKeyStyle parent = mStyles.get(parentStyle);
if (parent == null) {
throw new XmlParseUtils.ParseException(
"Unknown parentStyle " + parentStyle, parser);
}
style.addParentStyleAttributes(parent);
}
style.readKeyAttributes(keyAttrs);
mStyles.put(styleName, style);
}
public KeyStyle getKeyStyle(String styleName) {
return mStyles.get(styleName);
}
public static KeyStyle getEmptyKeyStyle() {
return EMPTY_KEY_STYLE;
}
}