258 lines
9.9 KiB
Java
258 lines
9.9 KiB
Java
/*
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* Copyright (C) 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.keyboard;
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import com.android.inputmethod.keyboard.KeyboardParser.ParseException;
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import com.android.inputmethod.latin.R;
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import android.content.res.TypedArray;
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import android.content.res.XmlResourceParser;
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import android.graphics.drawable.Drawable;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.HashMap;
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public class KeyStyles {
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private static final String TAG = "KeyStyles";
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private static final boolean DEBUG = false;
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private final HashMap<String, DeclaredKeyStyle> mStyles =
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new HashMap<String, DeclaredKeyStyle>();
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private static final KeyStyle EMPTY_KEY_STYLE = new EmptyKeyStyle();
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public interface KeyStyle {
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public CharSequence[] getTextArray(TypedArray a, int index);
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public Drawable getDrawable(TypedArray a, int index);
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public CharSequence getText(TypedArray a, int index);
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public int getInt(TypedArray a, int index, int defaultValue);
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public int getFlag(TypedArray a, int index, int defaultValue);
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public boolean getBoolean(TypedArray a, int index, boolean defaultValue);
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}
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/* package */ static class EmptyKeyStyle implements KeyStyle {
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private EmptyKeyStyle() {
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// Nothing to do.
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}
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@Override
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public CharSequence[] getTextArray(TypedArray a, int index) {
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return parseTextArray(a, index);
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}
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@Override
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public Drawable getDrawable(TypedArray a, int index) {
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return a.getDrawable(index);
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}
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@Override
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public CharSequence getText(TypedArray a, int index) {
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return a.getText(index);
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}
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@Override
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public int getInt(TypedArray a, int index, int defaultValue) {
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return a.getInt(index, defaultValue);
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}
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@Override
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public int getFlag(TypedArray a, int index, int defaultValue) {
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return a.getInt(index, defaultValue);
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}
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@Override
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public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
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return a.getBoolean(index, defaultValue);
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}
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protected static CharSequence[] parseTextArray(TypedArray a, int index) {
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if (!a.hasValue(index))
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return null;
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final CharSequence text = a.getText(index);
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return parseCsvText(text);
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}
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/* package */ static CharSequence[] parseCsvText(CharSequence text) {
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final int size = text.length();
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if (size == 0) return null;
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if (size == 1) return new CharSequence[] { text };
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final StringBuilder sb = new StringBuilder();
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ArrayList<CharSequence> list = null;
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int start = 0;
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for (int pos = 0; pos < size; pos++) {
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final char c = text.charAt(pos);
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if (c == ',') {
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if (list == null) list = new ArrayList<CharSequence>();
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if (sb.length() == 0) {
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list.add(text.subSequence(start, pos));
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} else {
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list.add(sb.toString());
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sb.setLength(0);
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}
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start = pos + 1;
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continue;
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} else if (c == '\\') {
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if (start == pos) {
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// Skip escape character at the beginning of the value.
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start++;
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pos++;
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} else {
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if (start < pos && sb.length() == 0)
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sb.append(text.subSequence(start, pos));
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pos++;
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if (pos < size)
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sb.append(text.charAt(pos));
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}
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} else if (sb.length() > 0) {
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sb.append(c);
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}
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}
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if (list == null) {
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return new CharSequence[] { sb.length() > 0 ? sb : text.subSequence(start, size) };
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} else {
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list.add(sb.length() > 0 ? sb : text.subSequence(start, size));
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return list.toArray(new CharSequence[list.size()]);
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}
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}
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}
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private static class DeclaredKeyStyle extends EmptyKeyStyle {
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private final HashMap<Integer, Object> mAttributes = new HashMap<Integer, Object>();
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@Override
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public CharSequence[] getTextArray(TypedArray a, int index) {
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return a.hasValue(index)
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? super.getTextArray(a, index) : (CharSequence[])mAttributes.get(index);
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}
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@Override
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public Drawable getDrawable(TypedArray a, int index) {
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return a.hasValue(index)
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? super.getDrawable(a, index) : (Drawable)mAttributes.get(index);
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}
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@Override
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public CharSequence getText(TypedArray a, int index) {
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return a.hasValue(index)
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? super.getText(a, index) : (CharSequence)mAttributes.get(index);
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}
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@Override
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public int getInt(TypedArray a, int index, int defaultValue) {
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final Integer value = (Integer)mAttributes.get(index);
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return super.getInt(a, index, (value != null) ? value : defaultValue);
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}
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@Override
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public int getFlag(TypedArray a, int index, int defaultValue) {
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final Integer value = (Integer)mAttributes.get(index);
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return super.getFlag(a, index, defaultValue) | (value != null ? value : 0);
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}
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@Override
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public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
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final Boolean value = (Boolean)mAttributes.get(index);
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return super.getBoolean(a, index, (value != null) ? value : defaultValue);
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}
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private DeclaredKeyStyle() {
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super();
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}
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private void parseKeyStyleAttributes(TypedArray keyAttr) {
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// TODO: Currently not all Key attributes can be declared as style.
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readInt(keyAttr, R.styleable.Keyboard_Key_code);
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readText(keyAttr, R.styleable.Keyboard_Key_keyLabel);
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readFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelOption);
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readTextArray(keyAttr, R.styleable.Keyboard_Key_popupCharacters);
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readInt(keyAttr, R.styleable.Keyboard_Key_maxPopupKeyboardColumn);
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readText(keyAttr, R.styleable.Keyboard_Key_keyOutputText);
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readDrawable(keyAttr, R.styleable.Keyboard_Key_keyIcon);
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readDrawable(keyAttr, R.styleable.Keyboard_Key_iconPreview);
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readDrawable(keyAttr, R.styleable.Keyboard_Key_keyHintIcon);
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readDrawable(keyAttr, R.styleable.Keyboard_Key_shiftedIcon);
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readBoolean(keyAttr, R.styleable.Keyboard_Key_isModifier);
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readBoolean(keyAttr, R.styleable.Keyboard_Key_isSticky);
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readBoolean(keyAttr, R.styleable.Keyboard_Key_isRepeatable);
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}
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private void readDrawable(TypedArray a, int index) {
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if (a.hasValue(index))
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mAttributes.put(index, a.getDrawable(index));
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}
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private void readText(TypedArray a, int index) {
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if (a.hasValue(index))
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mAttributes.put(index, a.getText(index));
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}
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private void readInt(TypedArray a, int index) {
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if (a.hasValue(index))
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mAttributes.put(index, a.getInt(index, 0));
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}
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private void readFlag(TypedArray a, int index) {
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final Integer value = (Integer)mAttributes.get(index);
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if (a.hasValue(index))
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mAttributes.put(index, a.getInt(index, 0) | (value != null ? value : 0));
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}
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private void readBoolean(TypedArray a, int index) {
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if (a.hasValue(index))
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mAttributes.put(index, a.getBoolean(index, false));
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}
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private void readTextArray(TypedArray a, int index) {
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final CharSequence[] value = parseTextArray(a, index);
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if (value != null)
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mAttributes.put(index, value);
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}
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private void addParent(DeclaredKeyStyle parentStyle) {
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mAttributes.putAll(parentStyle.mAttributes);
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}
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}
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public void parseKeyStyleAttributes(TypedArray keyStyleAttr, TypedArray keyAttrs,
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XmlResourceParser parser) {
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String styleName = keyStyleAttr.getString(R.styleable.Keyboard_KeyStyle_styleName);
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if (DEBUG) Log.d(TAG, String.format("<%s styleName=%s />",
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KeyboardParser.TAG_KEY_STYLE, styleName));
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if (mStyles.containsKey(styleName))
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throw new ParseException("duplicate key style declared: " + styleName, parser);
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final DeclaredKeyStyle style = new DeclaredKeyStyle();
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if (keyStyleAttr.hasValue(R.styleable.Keyboard_KeyStyle_parentStyle)) {
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String parentStyle = keyStyleAttr.getString(
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R.styleable.Keyboard_KeyStyle_parentStyle);
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final DeclaredKeyStyle parent = mStyles.get(parentStyle);
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if (parent == null)
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throw new ParseException("Unknown parentStyle " + parent, parser);
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style.addParent(parent);
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}
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style.parseKeyStyleAttributes(keyAttrs);
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mStyles.put(styleName, style);
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}
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public KeyStyle getKeyStyle(String styleName) {
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return mStyles.get(styleName);
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}
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public KeyStyle getEmptyKeyStyle() {
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return EMPTY_KEY_STYLE;
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}
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}
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