| /* |
| * Copyright (C) 2015 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 android.support.v7.preference; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.text.TextUtils; |
| import android.util.AttributeSet; |
| import android.widget.EditText; |
| |
| /** |
| * A {@link Preference} that allows for string |
| * input. |
| * <p> |
| * It is a subclass of {@link DialogPreference} and shows the {@link EditText} |
| * in a dialog. |
| * <p> |
| * This preference will store a string into the SharedPreferences. |
| */ |
| public class EditTextPreference extends DialogPreference { |
| private String mText; |
| |
| public EditTextPreference(Context context, AttributeSet attrs, int defStyleAttr, |
| int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| } |
| |
| public EditTextPreference(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public EditTextPreference(Context context, AttributeSet attrs) { |
| this(context, attrs, R.attr.editTextPreferenceStyle); |
| } |
| |
| public EditTextPreference(Context context) { |
| this(context, null); |
| } |
| |
| /** |
| * Saves the text to the {@link android.content.SharedPreferences}. |
| * |
| * @param text The text to save |
| */ |
| public void setText(String text) { |
| final boolean wasBlocking = shouldDisableDependents(); |
| |
| mText = text; |
| |
| persistString(text); |
| |
| final boolean isBlocking = shouldDisableDependents(); |
| if (isBlocking != wasBlocking) { |
| notifyDependencyChange(isBlocking); |
| } |
| } |
| |
| /** |
| * Gets the text from the {@link android.content.SharedPreferences}. |
| * |
| * @return The current preference value. |
| */ |
| public String getText() { |
| return mText; |
| } |
| |
| @Override |
| protected Object onGetDefaultValue(TypedArray a, int index) { |
| return a.getString(index); |
| } |
| |
| @Override |
| protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { |
| setText(restoreValue ? getPersistedString(mText) : (String) defaultValue); |
| } |
| |
| @Override |
| public boolean shouldDisableDependents() { |
| return TextUtils.isEmpty(mText) || super.shouldDisableDependents(); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| final Parcelable superState = super.onSaveInstanceState(); |
| if (isPersistent()) { |
| // No need to save instance state since it's persistent |
| return superState; |
| } |
| |
| final SavedState myState = new SavedState(superState); |
| myState.text = getText(); |
| return myState; |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Parcelable state) { |
| if (state == null || !state.getClass().equals(SavedState.class)) { |
| // Didn't save state for us in onSaveInstanceState |
| super.onRestoreInstanceState(state); |
| return; |
| } |
| |
| SavedState myState = (SavedState) state; |
| super.onRestoreInstanceState(myState.getSuperState()); |
| setText(myState.text); |
| } |
| |
| private static class SavedState extends BaseSavedState { |
| String text; |
| |
| public SavedState(Parcel source) { |
| super(source); |
| text = source.readString(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| super.writeToParcel(dest, flags); |
| dest.writeString(text); |
| } |
| |
| public SavedState(Parcelable superState) { |
| super(superState); |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR = |
| new Parcelable.Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| |
| } |