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package yuku.ambilwarna.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.View;
import yuku.ambilwarna.AmbilWarnaDialog;
import yuku.ambilwarna.R;
public class AmbilWarnaPreference extends Preference {
private final boolean supportsAlpha;
int value;
public AmbilWarnaPreference(Context context, AttributeSet attrs) {
super(context, attrs);
final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.AmbilWarnaPreference);
supportsAlpha = ta.getBoolean(R.styleable.AmbilWarnaPreference_supportsAlpha, false);
setWidgetLayoutResource(R.layout.ambilwarna_pref_widget);
}
@Override protected void onBindView(View view) {
super.onBindView(view);
// Set our custom views inside the layout
final View box = view.findViewById(R.id.ambilwarna_pref_widget_box);
if (box != null) {
box.setBackgroundColor(value);
}
}
@Override protected void onClick() {
new AmbilWarnaDialog(getContext(), value, supportsAlpha, new AmbilWarnaDialog.OnAmbilWarnaListener() {
@Override public void onOk(AmbilWarnaDialog dialog, int color) {
if (!callChangeListener(color)) return; // They don't want the value to be set
value = color;
persistInt(value);
notifyChanged();
}
@Override public void onCancel(AmbilWarnaDialog dialog) {
// nothing to do
}
}).show();
}
public void forceSetValue(int value) {
this.value = value;
persistInt(value);
notifyChanged();
}
@Override protected Object onGetDefaultValue(TypedArray a, int index) {
// This preference type's value type is Integer, so we read the default value from the attributes as an Integer.
return a.getInteger(index, 0);
}
@Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
if (restoreValue) { // Restore state
value = getPersistedInt(value);
} else { // Set state
int value = (Integer) defaultValue;
this.value = value;
persistInt(value);
}
}
/*
* Suppose a client uses this preference type without persisting. We
* must save the instance state so it is able to, for example, survive
* orientation changes.
*/
@Override protected Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
if (isPersistent()) return superState; // No need to save instance state since it's persistent
final SavedState myState = new SavedState(superState);
myState.value = value;
return myState;
}
@Override protected void onRestoreInstanceState(Parcelable state) {
if (!state.getClass().equals(SavedState.class)) {
// Didn't save state for us in onSaveInstanceState
super.onRestoreInstanceState(state);
return;
}
// Restore the instance state
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
this.value = myState.value;
notifyChanged();
}
/**
* SavedState, a subclass of {@link android.preference.Preference.BaseSavedState}, will store the state
* of MyPreference, a subclass of Preference.
* <p>
* It is important to always call through to super methods.
*/
private static class SavedState extends BaseSavedState {
int value;
public SavedState(Parcel source) {
super(source);
value = source.readInt();
}
@Override public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeInt(value);
}
public SavedState(Parcelable superState) {
super(superState);
}
@SuppressWarnings("unused") public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}
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