package org.holoeverywhere.preference; import android.annotation.SuppressLint; import android.content.Context; import android.content.res.TypedArray; import android.os.Build.VERSION; import android.os.Parcel; import android.os.Parcelable; import android.util.AttributeSet; import android.view.View; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityManager; import android.widget.TextView; public abstract class TwoStatePreference extends Preference { static class SavedState extends BaseSavedState { public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() { @Override public SavedState createFromParcel(Parcel in) { return new SavedState(in); } @Override public SavedState[] newArray(int size) { return new SavedState[size]; } }; boolean checked; public SavedState(Parcel source) { super(source); checked = source.readInt() == 1; } public SavedState(Parcelable superState) { super(superState); } @Override public void writeToParcel(Parcel dest, int flags) { super.writeToParcel(dest, flags); dest.writeInt(checked ? 1 : 0); } } boolean mChecked; private boolean mDisableDependentsState; private boolean mSendClickAccessibilityEvent; private CharSequence mSummaryOff, mSummaryOn; public TwoStatePreference(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); context = getContext(); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TwoStatePreference, defStyle, R.style.Holo_PreferenceTwoState); mSummaryOn = a.getText(R.styleable.TwoStatePreference_summaryOn); mSummaryOff = a.getText(R.styleable.TwoStatePreference_summaryOff); mDisableDependentsState = a.getBoolean( R.styleable.TwoStatePreference_disableDependentsState, false); a.recycle(); } public boolean getDisableDependentsState() { return mDisableDependentsState; } public CharSequence getSummaryOff() { return mSummaryOff; } public CharSequence getSummaryOn() { return mSummaryOn; } public boolean isChecked() { return mChecked; } @Override protected void onClick() { super.onClick(); boolean newValue = !isChecked(); mSendClickAccessibilityEvent = true; if (!callChangeListener(newValue)) { return; } setChecked(newValue); } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return a.getBoolean(index, false); } @Override protected void onRestoreInstanceState(Parcelable state) { if (state == null || !state.getClass().equals(SavedState.class)) { super.onRestoreInstanceState(state); return; } SavedState myState = (SavedState) state; super.onRestoreInstanceState(myState.getSuperState()); setChecked(myState.checked); } @Override protected Parcelable onSaveInstanceState() { final Parcelable superState = super.onSaveInstanceState(); if (isPersistent()) { return superState; } final SavedState myState = new SavedState(superState); myState.checked = isChecked(); return myState; } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { setChecked(restoreValue ? getPersistedBoolean(mChecked) : (Boolean) defaultValue); } @SuppressLint("NewApi") void sendAccessibilityEvent(View view) { try { AccessibilityManager accessibilityManager = (AccessibilityManager) getContext() .getSystemService(Context.ACCESSIBILITY_SERVICE); if (mSendClickAccessibilityEvent && accessibilityManager.isEnabled()) { AccessibilityEvent event = AccessibilityEvent.obtain(); event.setEventType(AccessibilityEvent.TYPE_VIEW_CLICKED); if (VERSION.SDK_INT >= 14) { view.onInitializeAccessibilityEvent(event); } view.dispatchPopulateAccessibilityEvent(event); accessibilityManager.sendAccessibilityEvent(event); } } catch (Exception e) { } mSendClickAccessibilityEvent = false; } public void setChecked(boolean checked) { if (mChecked != checked) { mChecked = checked; persistBoolean(checked); notifyDependencyChange(shouldDisableDependents()); notifyChanged(); } } public void setDisableDependentsState(boolean disableDependentsState) { mDisableDependentsState = disableDependentsState; } public void setSummaryOff(CharSequence summary) { mSummaryOff = summary; if (!isChecked()) { notifyChanged(); } } public void setSummaryOff(int summaryResId) { setSummaryOff(getContext().getString(summaryResId)); } public void setSummaryOn(CharSequence summary) { mSummaryOn = summary; if (isChecked()) { notifyChanged(); } } public void setSummaryOn(int summaryResId) { setSummaryOn(getContext().getString(summaryResId)); } @Override public boolean shouldDisableDependents() { return mDisableDependentsState ? mChecked : !mChecked || super.shouldDisableDependents(); } void syncSummaryView(View view) { TextView summaryView = (TextView) view.findViewById(R.id.summary); if (summaryView != null) { boolean useDefaultSummary = true; if (mChecked && mSummaryOn != null) { summaryView.setText(mSummaryOn); useDefaultSummary = false; } else if (!mChecked && mSummaryOff != null) { summaryView.setText(mSummaryOff); useDefaultSummary = false; } if (useDefaultSummary) { final CharSequence summary = getSummary(); if (summary != null) { summaryView.setText(summary); useDefaultSummary = false; } } int newVisibility = useDefaultSummary ? View.GONE : View.VISIBLE; if (newVisibility != summaryView.getVisibility()) { summaryView.setVisibility(newVisibility); } } } }