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/*
* Copyright (C) 2011 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.browser.preferences;
import android.content.Context;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.webkit.WebView;
import com.android.browser.BrowserSettings;
import com.android.browser.PreferenceKeys;
import com.android.browser.R;
import java.text.NumberFormat;
public class AccessibilityPreferencesFragment extends PreferenceFragment
implements Preference.OnPreferenceChangeListener {
NumberFormat mFormat;
// Used to pause/resume timers, which are required for WebViewPreview
WebView mControlWebView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mControlWebView = new WebView(getActivity());
addPreferencesFromResource(R.xml.accessibility_preferences);
BrowserSettings settings = BrowserSettings.getInstance();
mFormat = NumberFormat.getPercentInstance();
Preference e = findPreference(PreferenceKeys.PREF_MIN_FONT_SIZE);
e.setOnPreferenceChangeListener(this);
updateMinFontSummary(e, settings.getMinimumFontSize());
e = findPreference(PreferenceKeys.PREF_TEXT_ZOOM);
e.setOnPreferenceChangeListener(this);
updateTextZoomSummary(e, settings.getTextZoom());
e = findPreference(PreferenceKeys.PREF_DOUBLE_TAP_ZOOM);
e.setOnPreferenceChangeListener(this);
updateDoubleTapZoomSummary(e, settings.getDoubleTapZoom());
e = findPreference(PreferenceKeys.PREF_INVERTED_CONTRAST);
e.setOnPreferenceChangeListener(this);
updateInvertedContrastSummary(e, (int) (settings.getInvertedContrast() * 100));
}
@Override
public void onResume() {
super.onResume();
mControlWebView.resumeTimers();
}
@Override
public void onPause() {
super.onPause();
mControlWebView.pauseTimers();
}
@Override
public void onDestroy() {
super.onDestroy();
mControlWebView.destroy();
mControlWebView = null;
}
void updateMinFontSummary(Preference pref, int minFontSize) {
Context c = getActivity();
pref.setSummary(c.getString(R.string.pref_min_font_size_value, minFontSize));
}
void updateTextZoomSummary(Preference pref, int textZoom) {
pref.setSummary(mFormat.format(textZoom / 100.0));
}
void updateDoubleTapZoomSummary(Preference pref, int doubleTapZoom) {
pref.setSummary(mFormat.format(doubleTapZoom / 100.0));
}
void updateInvertedContrastSummary(Preference pref, int contrast) {
pref.setSummary(mFormat.format(contrast / 100.0));
}
@Override
public boolean onPreferenceChange(Preference pref, Object objValue) {
if (getActivity() == null) {
// We aren't attached, so don't accept preferences changes from the
// invisible UI.
return false;
}
if (PreferenceKeys.PREF_MIN_FONT_SIZE.equals(pref.getKey())) {
updateMinFontSummary(pref, BrowserSettings
.getAdjustedMinimumFontSize((Integer) objValue));
}
if (PreferenceKeys.PREF_TEXT_ZOOM.equals(pref.getKey())) {
BrowserSettings settings = BrowserSettings.getInstance();
updateTextZoomSummary(pref, settings
.getAdjustedTextZoom((Integer) objValue));
}
if (PreferenceKeys.PREF_DOUBLE_TAP_ZOOM.equals(pref.getKey())) {
BrowserSettings settings = BrowserSettings.getInstance();
updateDoubleTapZoomSummary(pref, settings
.getAdjustedDoubleTapZoom((Integer) objValue));
}
if (PreferenceKeys.PREF_INVERTED_CONTRAST.equals(pref.getKey())) {
updateInvertedContrastSummary(pref,
(int) ((10 + (Integer) objValue) * 10));
}
return true;
}
}
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