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/*
* Copyright (C) 2012 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.Context;
import android.content.res.Resources;
import android.text.TextUtils;
import com.android.inputmethod.annotations.UsedForTesting;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.utils.RunInLocale;
import com.android.inputmethod.latin.utils.SubtypeLocaleUtils;
import java.util.HashMap;
import java.util.Locale;
public final class KeyboardTextsSet {
public static final String PREFIX_TEXT = "!text/";
public static final String SWITCH_TO_ALPHA_KEY_LABEL = "keylabel_to_alpha";
private static final char BACKSLASH = Constants.CODE_BACKSLASH;
private static final int MAX_STRING_REFERENCE_INDIRECTION = 10;
private String[] mTextsTable;
// Resource name to text map.
private HashMap<String, String> mResourceNameToTextsMap = new HashMap<>();
public void setLocale(final Locale locale, final Context context) {
mTextsTable = KeyboardTextsTable.getTextsTable(locale);
final Resources res = context.getResources();
final int referenceId = context.getApplicationInfo().labelRes;
final String resourcePackageName = res.getResourcePackageName(referenceId);
final RunInLocale<Void> job = new RunInLocale<Void>() {
@Override
protected Void job(final Resources resource) {
loadStringResourcesInternal(res, RESOURCE_NAMES, resourcePackageName);
return null;
}
};
// Null means the current system locale.
job.runInLocale(res,
SubtypeLocaleUtils.NO_LANGUAGE.equals(locale.toString()) ? null : locale);
}
@UsedForTesting
void loadStringResourcesInternal(final Resources res, final String[] resourceNames,
final String resourcePackageName) {
for (final String resName : resourceNames) {
final int resId = res.getIdentifier(resName, "string", resourcePackageName);
mResourceNameToTextsMap.put(resName, res.getString(resId));
}
}
public String getText(final String name) {
final String text = mResourceNameToTextsMap.get(name);
return (text != null) ? text : KeyboardTextsTable.getText(name, mTextsTable);
}
private static int searchTextNameEnd(final String text, final int start) {
final int size = text.length();
for (int pos = start; pos < size; pos++) {
final char c = text.charAt(pos);
// Label name should be consisted of [a-zA-Z_0-9].
if ((c >= 'a' && c <= 'z') || c == '_' || (c >= '0' && c <= '9')) {
continue;
}
return pos;
}
return size;
}
// TODO: Resolve text reference when creating {@link KeyboardTextsTable} class.
public String resolveTextReference(final String rawText) {
if (TextUtils.isEmpty(rawText)) {
return null;
}
int level = 0;
String text = rawText;
StringBuilder sb;
do {
level++;
if (level >= MAX_STRING_REFERENCE_INDIRECTION) {
throw new RuntimeException("Too many " + PREFIX_TEXT + "name indirection: " + text);
}
final int prefixLen = PREFIX_TEXT.length();
final int size = text.length();
if (size < prefixLen) {
break;
}
sb = null;
for (int pos = 0; pos < size; pos++) {
final char c = text.charAt(pos);
if (text.startsWith(PREFIX_TEXT, pos)) {
if (sb == null) {
sb = new StringBuilder(text.substring(0, pos));
}
final int end = searchTextNameEnd(text, pos + prefixLen);
final String name = text.substring(pos + prefixLen, end);
sb.append(getText(name));
pos = end - 1;
} else if (c == BACKSLASH) {
if (sb != null) {
// Append both escape character and escaped character.
sb.append(text.substring(pos, Math.min(pos + 2, size)));
}
pos++;
} else if (sb != null) {
sb.append(c);
}
}
if (sb != null) {
text = sb.toString();
}
} while (sb != null);
return TextUtils.isEmpty(text) ? null : text;
}
// These texts' name should be aligned with the @string/<name> in
// values*/strings-action-keys.xml.
static final String[] RESOURCE_NAMES = {
// Labels for action.
"label_go_key",
"label_send_key",
"label_next_key",
"label_done_key",
"label_search_key",
"label_previous_key",
// Other labels.
"label_pause_key",
"label_wait_key",
};
}
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