michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.preferences;
michael@0: 
michael@0: import org.mozilla.gecko.animation.PropertyAnimator;
michael@0: import org.mozilla.gecko.animation.PropertyAnimator.Property;
michael@0: import org.mozilla.gecko.animation.ViewHelper;
michael@0: import org.mozilla.gecko.R;
michael@0: 
michael@0: import android.app.AlertDialog;
michael@0: import android.app.Dialog;
michael@0: import android.content.Context;
michael@0: import android.content.DialogInterface;
michael@0: import android.content.DialogInterface.OnClickListener;
michael@0: import android.content.DialogInterface.OnShowListener;
michael@0: import android.content.res.Resources;
michael@0: import android.util.Log;
michael@0: import android.view.View;
michael@0: import android.view.ViewGroup;
michael@0: import android.widget.TextView;
michael@0: 
michael@0: public class PanelsPreference extends CustomListPreference {
michael@0:     protected String LOGTAG = "PanelsPreference";
michael@0: 
michael@0:     // Position state of this Preference in enclosing category.
michael@0:     private static final int STATE_IS_FIRST = 0;
michael@0:     private static final int STATE_IS_LAST = 1;
michael@0: 
michael@0:     /**
michael@0:      * Index of the context menu button for controlling display options.
michael@0:      * For (removable) Dynamic panels, this button removes the panel.
michael@0:      * For built-in panels, this button toggles showing or hiding the panel.
michael@0:      */
michael@0:     private static final int INDEX_DISPLAY_BUTTON = 1;
michael@0:     private static final int INDEX_REORDER_BUTTON = 2;
michael@0: 
michael@0:     // Indices of buttons in context menu for reordering.
michael@0:     private static final int INDEX_MOVE_UP_BUTTON = 0;
michael@0:     private static final int INDEX_MOVE_DOWN_BUTTON = 1;
michael@0: 
michael@0:     private String LABEL_HIDE;
michael@0:     private String LABEL_SHOW;
michael@0: 
michael@0:     private View preferenceView;
michael@0:     protected boolean mIsHidden = false;
michael@0:     private boolean mIsRemovable;
michael@0: 
michael@0:     private boolean mAnimate;
michael@0:     private static final int ANIMATION_DURATION_MS = 400;
michael@0: 
michael@0:     // State for reordering.
michael@0:     private int mPositionState = -1;
michael@0:     private final int mIndex;
michael@0: 
michael@0:     public PanelsPreference(Context context, CustomListCategory parentCategory, boolean isRemovable, int index, boolean animate) {
michael@0:         super(context, parentCategory);
michael@0:         mIsRemovable = isRemovable;
michael@0:         mIndex = index;
michael@0:         mAnimate = animate;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected int getPreferenceLayoutResource() {
michael@0:         return R.layout.preference_panels;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onBindView(View view) {
michael@0:         super.onBindView(view);
michael@0: 
michael@0:         // Override view handling so we can grey out "hidden" PanelPreferences.
michael@0:         view.setEnabled(!mIsHidden);
michael@0: 
michael@0:         if (view instanceof ViewGroup) {
michael@0:             final ViewGroup group = (ViewGroup) view;
michael@0:             for (int i = 0; i < group.getChildCount(); i++) {
michael@0:                 group.getChildAt(i).setEnabled(!mIsHidden);
michael@0:             }
michael@0:             preferenceView = group;
michael@0:         }
michael@0: 
michael@0:         if (mAnimate) {
michael@0:             ViewHelper.setAlpha(preferenceView, 0);
michael@0: 
michael@0:             final PropertyAnimator animator = new PropertyAnimator(ANIMATION_DURATION_MS);
michael@0:             animator.attach(preferenceView, Property.ALPHA, 1);
michael@0:             animator.start();
michael@0: 
michael@0:             // Clear animate flag.
michael@0:             mAnimate = false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected String[] createDialogItems() {
michael@0:         final Resources res = getContext().getResources();
michael@0:         final String labelReorder = res.getString(R.string.pref_panels_reorder);
michael@0: 
michael@0:         if (mIsRemovable) {
michael@0:             return new String[] { LABEL_SET_AS_DEFAULT, LABEL_REMOVE, labelReorder };
michael@0:         }
michael@0: 
michael@0:         // Built-in panels can't be removed, so use show/hide options.
michael@0:         LABEL_HIDE = res.getString(R.string.pref_panels_hide);
michael@0:         LABEL_SHOW = res.getString(R.string.pref_panels_show);
michael@0: 
michael@0:         return new String[] { LABEL_SET_AS_DEFAULT, LABEL_HIDE, labelReorder };
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void setIsDefault(boolean isDefault) {
michael@0:         mIsDefault = isDefault;
michael@0:         if (isDefault) {
michael@0:             setSummary(LABEL_IS_DEFAULT);
michael@0:             if (mIsHidden) {
michael@0:                 // Unhide the panel if it's being set as the default.
michael@0:                 setHidden(false);
michael@0:             }
michael@0:         } else {
michael@0:             setSummary("");
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onDialogIndexClicked(int index) {
michael@0:         switch(index) {
michael@0:             case INDEX_SET_DEFAULT_BUTTON:
michael@0:                 mParentCategory.setDefault(this);
michael@0:                 break;
michael@0: 
michael@0:             case INDEX_DISPLAY_BUTTON:
michael@0:                 // Handle display options for the panel.
michael@0:                 if (mIsRemovable) {
michael@0:                     // For removable panels, the button displays text for removing the panel.
michael@0:                     mParentCategory.uninstall(this);
michael@0:                 } else {
michael@0:                     // Otherwise, the button toggles between text for showing or hiding the panel.
michael@0:                     ((PanelsPreferenceCategory) mParentCategory).setHidden(this, !mIsHidden);
michael@0:                 }
michael@0:                 break;
michael@0: 
michael@0:             case INDEX_REORDER_BUTTON:
michael@0:                 // Display dialog for changing preference order.
michael@0:                 final Dialog orderDialog = makeReorderDialog();
michael@0:                 orderDialog.show();
michael@0:                 break;
michael@0: 
michael@0:             default:
michael@0:                 Log.w(LOGTAG, "Selected index out of range: " + index);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void configureShownDialog() {
michael@0:         super.configureShownDialog();
michael@0: 
michael@0:         // Handle Show/Hide buttons.
michael@0:         if (!mIsRemovable) {
michael@0:             final TextView hideButton = (TextView) mDialog.getListView().getChildAt(INDEX_DISPLAY_BUTTON);
michael@0:             hideButton.setText(mIsHidden ? LABEL_SHOW : LABEL_HIDE);
michael@0:         }
michael@0:     }
michael@0: 
michael@0: 
michael@0:     private Dialog makeReorderDialog() {
michael@0:         final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
michael@0: 
michael@0:         final Resources res = getContext().getResources();
michael@0:         final String labelUp = res.getString(R.string.pref_panels_move_up);
michael@0:         final String labelDown = res.getString(R.string.pref_panels_move_down);
michael@0: 
michael@0:         builder.setTitle(getTitle());
michael@0:         builder.setItems(new String[] { labelUp, labelDown }, new OnClickListener() {
michael@0:             @Override
michael@0:             public void onClick(DialogInterface dialog, int index) {
michael@0:                 dialog.dismiss();
michael@0:                 switch (index) {
michael@0:                     case INDEX_MOVE_UP_BUTTON:
michael@0:                         ((PanelsPreferenceCategory) mParentCategory).moveUp(PanelsPreference.this);
michael@0:                         break;
michael@0: 
michael@0:                     case INDEX_MOVE_DOWN_BUTTON:
michael@0:                         ((PanelsPreferenceCategory) mParentCategory).moveDown(PanelsPreference.this);
michael@0:                         break;
michael@0:                 }
michael@0:             }
michael@0:         });
michael@0: 
michael@0:         final Dialog dialog = builder.create();
michael@0:         dialog.setOnShowListener(new OnShowListener() {
michael@0:             @Override
michael@0:             public void onShow(DialogInterface dialog) {
michael@0:                setReorderItemsEnabled(dialog);
michael@0:             }
michael@0:         });
michael@0: 
michael@0:         return dialog;
michael@0:     }
michael@0: 
michael@0:     public void setIsFirst() {
michael@0:         mPositionState = STATE_IS_FIRST;
michael@0:     }
michael@0: 
michael@0:     public void setIsLast() {
michael@0:         mPositionState = STATE_IS_LAST;
michael@0:     }
michael@0: 
michael@0:     /**
michael@0:      * Configure enabled state of the reorder dialog, which must be done after the dialog is shown.
michael@0:      * @param dialog Dialog to configure
michael@0:      */
michael@0:     private void setReorderItemsEnabled(DialogInterface dialog) {
michael@0:         // Update button enabled-ness for reordering.
michael@0:         switch (mPositionState) {
michael@0:             case STATE_IS_FIRST:
michael@0:                 final TextView itemUp = (TextView) ((AlertDialog) dialog).getListView().getChildAt(INDEX_MOVE_UP_BUTTON);
michael@0:                 itemUp.setEnabled(false);
michael@0:                 // Disable clicks to this view.
michael@0:                 itemUp.setOnClickListener(null);
michael@0:                 break;
michael@0: 
michael@0:             case STATE_IS_LAST:
michael@0:                 final TextView itemDown = (TextView) ((AlertDialog) dialog).getListView().getChildAt(INDEX_MOVE_DOWN_BUTTON);
michael@0:                 itemDown.setEnabled(false);
michael@0:                 // Disable clicks to this view.
michael@0:                 itemDown.setOnClickListener(null);
michael@0:                 break;
michael@0: 
michael@0:             default:
michael@0:                 // Do nothing.
michael@0:                 break;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public void setHidden(boolean toHide) {
michael@0:         if (toHide) {
michael@0:             setIsDefault(false);
michael@0:         }
michael@0: 
michael@0:         if (mIsHidden != toHide) {
michael@0:             mIsHidden = toHide;
michael@0:             notifyChanged();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public boolean isHidden() {
michael@0:         return mIsHidden;
michael@0:     }
michael@0: 
michael@0:     public int getIndex() {
michael@0:         return mIndex;
michael@0:     }
michael@0: }