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Move the Preference implementations to com.reecedunn.espeak.preference.
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Reece H. Dunn
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/*
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* Copyright (C) 2013 Reece H. Dunn
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.reecedunn.espeak.preference;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.SharedPreferences;
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import android.preference.DialogPreference;
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import android.util.AttributeSet;
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import android.view.View;
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import android.widget.Button;
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import android.widget.SeekBar;
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import android.widget.TextView;
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import com.reecedunn.espeak.R;
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public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener
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{
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private SeekBar mSeekBar;
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private TextView mValueText;
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private int mOldProgress = 0;
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private int mProgress = 0;
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private int mDefaultValue = 0;
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private int mMin = 0;
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private int mMax = 100;
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private String mFormatter = "%s";
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public void setProgress(int progress) {
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mProgress = progress;
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String text = Integer.toString(mProgress);
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callChangeListener(text);
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// Update the last saved value to the so it can be restored later if
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// the user cancels the dialog. This needs to be done here as well
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// as the onProgressChanged handler as the SeekBar will not be
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// initialized at this point.
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mOldProgress = mProgress;
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}
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public int getProgress() {
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return mProgress;
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}
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public void setDefaultValue(int defaultValue) {
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mDefaultValue = defaultValue;
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}
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public int getDefaultValue() {
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return mDefaultValue;
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}
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public void setMin(int min) {
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mMin = min;
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}
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public int getMin() {
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return mMin;
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}
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public void setMax(int max) {
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mMax = max;
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}
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public int getMax() {
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return mMax;
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}
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public void setFormatter(String formatter) {
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mFormatter = formatter;
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}
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public String getFormatter() {
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return mFormatter;
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}
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public SeekBarPreference(Context context, AttributeSet attrs, int defStyle)
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{
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super(context, attrs, defStyle);
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setDialogLayoutResource(R.layout.seekbar_preference);
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setLayoutResource(R.layout.information_view);
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setPositiveButtonText(android.R.string.ok);
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setNegativeButtonText(android.R.string.cancel);
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}
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public SeekBarPreference(Context context, AttributeSet attrs)
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{
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this(context, attrs, 0);
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}
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public SeekBarPreference(Context context)
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{
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this(context, null);
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}
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private void persistSettings(int progress) {
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mProgress = progress;
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String text = Integer.toString(mProgress);
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callChangeListener(text);
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if (shouldCommit()) {
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SharedPreferences.Editor editor = getEditor();
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editor.putString(getKey(), text);
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editor.commit();
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}
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}
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@Override
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protected View onCreateDialogView() {
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View root = super.onCreateDialogView();
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mSeekBar = (SeekBar)root.findViewById(R.id.seekBar);
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mValueText = (TextView)root.findViewById(R.id.valueText);
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Button reset = (Button)root.findViewById(R.id.resetToDefault);
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reset.setOnClickListener(new View.OnClickListener(){
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@Override
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public void onClick(View v)
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{
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int defaultValue = getDefaultValue();
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mSeekBar.setProgress(defaultValue - mMin);
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// Persist the value here to ensure that eSpeak is using the
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// new value the next time e.g. TalkBack reads part of the UI.
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persistSettings(defaultValue);
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}
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});
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return root;
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}
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@Override
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protected void onBindDialogView(View view) {
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super.onBindDialogView(view);
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mSeekBar.setOnSeekBarChangeListener(this);
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mSeekBar.setMax(mMax - mMin);
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mSeekBar.setProgress(mProgress - mMin);
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// Update the last saved value to the so it can be restored later if
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// the user cancels the dialog.
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mOldProgress = mProgress;
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}
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@Override
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public void onClick(DialogInterface dialog, int which) {
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switch (which) {
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case DialogInterface.BUTTON_POSITIVE:
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// Update the last saved value so this will be persisted when
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// the dialog is dismissed.
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mOldProgress = mSeekBar.getProgress() + mMin;
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break;
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}
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super.onClick(dialog, which);
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}
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@Override
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public void onDismiss(DialogInterface dialog) {
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// There are 3 ways to dismiss a dialog:
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// 1. Pressing the OK (positive) button.
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// 2. Pressing the Cancel (negative) button.
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// 3. Pressing the Back button.
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//
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// For [1], the new value needs to be persisted. For [2] and [3], the
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// old value needs to be persisted (so the last saved value is
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// restored). As there is no easy way to override the Dialog's back
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// button pressed handler, the following approach is used:
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//
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// 1. If the user presses the OK button, the last saved value is
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// updated to be the new value (see the onClick handler).
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//
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// 2. In all cases, the last saved value is persisted when the dialog
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// is closed (in this onDismiss handler).
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persistSettings(mOldProgress);
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}
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@Override
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public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
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{
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// This callback gets called frequently when the user is moving the
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// slider, so constantly persisting the seeker value will be annoying.
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//
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// If the value is being set programatically, persisting the seeker
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// value here will cause the speech rate to be set to 80 WPM (via the
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// onBindDialogView handler).
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String text = String.format(getFormatter(), Integer.toString(progress + mMin));
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mValueText.setText(text);
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mSeekBar.setContentDescription(text);
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}
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@Override
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public void onStartTrackingTouch(SeekBar seekBar)
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{
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}
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@Override
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public void onStopTrackingTouch(SeekBar seekBar)
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{
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// After the user has let go of the slider, the new value is
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// persisted to ensure that eSpeak is using the new value the
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// next time e.g. TalkBack reads part of the UI.
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persistSettings(mSeekBar.getProgress() + mMin);
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}
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}
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