/*
* 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.internal.KeyboardBuilder.ParseException;
import com.sugree.inputmethod.latin.R;
import org.xmlpull.v1.XmlPullParser;
import java.util.ArrayList;
import java.util.HashMap;
public class KeyStyles {
private static final String TAG = "KeyStyles";
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 CharSequence[] getTextArray(TypedArray a, int index);
public CharSequence getText(TypedArray a, int index);
public int getInt(TypedArray a, int index, int defaultValue);
public int getFlag(TypedArray a, int index, int defaultValue);
public boolean getBoolean(TypedArray a, int index, boolean defaultValue);
}
/* package */ static class EmptyKeyStyle implements KeyStyle {
private EmptyKeyStyle() {
// Nothing to do.
}
@Override
public CharSequence[] getTextArray(TypedArray a, int index) {
return parseTextArray(a, index);
}
@Override
public CharSequence getText(TypedArray a, int index) {
return a.getText(index);
}
@Override
public int getInt(TypedArray a, int index, int defaultValue) {
return a.getInt(index, defaultValue);
}
@Override
public int getFlag(TypedArray a, int index, int defaultValue) {
return a.getInt(index, defaultValue);
}
@Override
public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
return a.getBoolean(index, defaultValue);
}
protected static CharSequence[] parseTextArray(TypedArray a, int index) {
if (!a.hasValue(index))
return null;
final CharSequence text = a.getText(index);
return parseCsvText(text);
}
/* package */ static CharSequence[] parseCsvText(CharSequence text) {
final int size = text.length();
if (size == 0) return null;
if (size == 1) return new CharSequence[] { text };
final StringBuilder sb = new StringBuilder();
ArrayList<CharSequence> list = null;
int start = 0;
for (int pos = 0; pos < size; pos++) {
final char c = text.charAt(pos);
if (c == ',') {
if (list == null) list = new ArrayList<CharSequence>();
if (sb.length() == 0) {
list.add(text.subSequence(start, pos));
} else {
list.add(sb.toString());
sb.setLength(0);
}
start = pos + 1;
continue;
} else if (c == '\\') {
if (start == pos) {
// Skip escape character at the beginning of the value.
start++;
pos++;
} else {
if (start < pos && sb.length() == 0)
sb.append(text.subSequence(start, pos));
pos++;
if (pos < size)
sb.append(text.charAt(pos));
}
} else if (sb.length() > 0) {
sb.append(c);
}
}
if (list == null) {
return new CharSequence[] { sb.length() > 0 ? sb : text.subSequence(start, size) };
} else {
list.add(sb.length() > 0 ? sb : text.subSequence(start, size));
return list.toArray(new CharSequence[list.size()]);
}
}
}
private static class DeclaredKeyStyle extends EmptyKeyStyle {
private final HashMap<Integer, Object> mAttributes = new HashMap<Integer, Object>();
@Override
public CharSequence[] getTextArray(TypedArray a, int index) {
return a.hasValue(index)
? super.getTextArray(a, index) : (CharSequence[])mAttributes.get(index);
}
@Override
public CharSequence getText(TypedArray a, int index) {
return a.hasValue(index)
? super.getText(a, index) : (CharSequence)mAttributes.get(index);
}
@Override
public int getInt(TypedArray a, int index, int defaultValue) {
final Integer value = (Integer)mAttributes.get(index);
return super.getInt(a, index, (value != null) ? value : defaultValue);
}
@Override
public int getFlag(TypedArray a, int index, int defaultValue) {
final Integer value = (Integer)mAttributes.get(index);
return super.getFlag(a, index, defaultValue) | (value != null ? value : 0);
}
@Override
public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
final Boolean value = (Boolean)mAttributes.get(index);
return super.getBoolean(a, index, (value != null) ? value : defaultValue);
}
private DeclaredKeyStyle() {
super();
}
private void parseKeyStyleAttributes(TypedArray keyAttr) {
// TODO: Currently not all Key attributes can be declared as style.
readInt(keyAttr, R.styleable.Keyboard_Key_code);
readText(keyAttr, R.styleable.Keyboard_Key_keyLabel);
readText(keyAttr, R.styleable.Keyboard_Key_keyOutputText);
readText(keyAttr, R.styleable.Keyboard_Key_keyHintLabel);
readTextArray(keyAttr, R.styleable.Keyboard_Key_moreKeys);
readFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelOption);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIcon);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIconPreview);
readInt(keyAttr, R.styleable.Keyboard_Key_keyIconShifted);
readInt(keyAttr, R.styleable.Keyboard_Key_maxMoreKeysColumn);
readInt(keyAttr, R.styleable.Keyboard_Key_backgroundType);
readBoolean(keyAttr, R.styleable.Keyboard_Key_isRepeatable);
readBoolean(keyAttr, R.styleable.Keyboard_Key_enabled);
}
private void readText(TypedArray a, int index) {
if (a.hasValue(index))
mAttributes.put(index, a.getText(index));
}
private void readInt(TypedArray a, int index) {
if (a.hasValue(index))
mAttributes.put(index, a.getInt(index, 0));
}
private void readFlag(TypedArray a, int index) {
final Integer value = (Integer)mAttributes.get(index);
if (a.hasValue(index))
mAttributes.put(index, a.getInt(index, 0) | (value != null ? value : 0));
}
private void readBoolean(TypedArray a, int index) {
if (a.hasValue(index))
mAttributes.put(index, a.getBoolean(index, false));
}
private void readTextArray(TypedArray a, int index) {
final CharSequence[] value = parseTextArray(a, index);
if (value != null)
mAttributes.put(index, value);
}
private void addParent(DeclaredKeyStyle parentStyle) {
mAttributes.putAll(parentStyle.mAttributes);
}
}
public void parseKeyStyleAttributes(TypedArray keyStyleAttr, TypedArray keyAttrs,
XmlPullParser parser) {
final String styleName = keyStyleAttr.getString(R.styleable.Keyboard_KeyStyle_styleName);
if (DEBUG) Log.d(TAG, String.format("<%s styleName=%s />",
KeyboardBuilder.TAG_KEY_STYLE, styleName));
if (mStyles.containsKey(styleName))
throw new 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 ParseException("Unknown parentStyle " + parentStyle, parser);
style.addParent(parent);
}
style.parseKeyStyleAttributes(keyAttrs);
mStyles.put(styleName, style);
}
public KeyStyle getKeyStyle(String styleName) {
return mStyles.get(styleName);
}
public KeyStyle getEmptyKeyStyle() {
return EMPTY_KEY_STYLE;
}
}