michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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.prompts;
michael@0: 
michael@0: import java.util.ArrayList;
michael@0: import java.util.List;
michael@0: 
michael@0: import org.json.JSONArray;
michael@0: import org.json.JSONObject;
michael@0: import org.mozilla.gecko.GeckoAppShell;
michael@0: import org.mozilla.gecko.R;
michael@0: import org.mozilla.gecko.gfx.BitmapUtils;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.graphics.drawable.Drawable;
michael@0: import android.text.TextUtils;
michael@0: import android.view.Display;
michael@0: import android.view.LayoutInflater;
michael@0: import android.view.View;
michael@0: import android.view.ViewGroup;
michael@0: import android.view.WindowManager;
michael@0: import android.widget.AdapterView;
michael@0: import android.widget.AdapterView.OnItemClickListener;
michael@0: import android.widget.ArrayAdapter;
michael@0: import android.widget.GridView;
michael@0: import android.widget.ImageView;
michael@0: import android.widget.TextView;
michael@0: 
michael@0: public class IconGridInput extends PromptInput implements OnItemClickListener {
michael@0:     public static final String INPUT_TYPE = "icongrid";
michael@0:     public static final String LOGTAG = "GeckoIconGridInput";
michael@0: 
michael@0:     private ArrayAdapter<IconGridItem> mAdapter; // An adapter holding a list of items to show in the grid
michael@0: 
michael@0:     private static int mColumnWidth = -1;  // The maximum width of columns
michael@0:     private static int mMaxColumns = -1;  // The maximum number of columns to show
michael@0:     private static int mIconSize = -1;    // Size of icons in the grid
michael@0:     private int mSelected = -1;           // Current selection
michael@0:     private JSONArray mArray;
michael@0: 
michael@0:     public IconGridInput(JSONObject obj) {
michael@0:         super(obj);
michael@0:         mArray = obj.optJSONArray("items");
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public View getView(Context context) throws UnsupportedOperationException {
michael@0:         if (mColumnWidth < 0) {
michael@0:             // getColumnWidth isn't available on pre-ICS, so we pull it out and assign it here
michael@0:             mColumnWidth = context.getResources().getDimensionPixelSize(R.dimen.icongrid_columnwidth);
michael@0:         }
michael@0: 
michael@0:         if (mIconSize < 0) {
michael@0:             mIconSize = GeckoAppShell.getPreferredIconSize();
michael@0:         }
michael@0: 
michael@0:         if (mMaxColumns < 0) {
michael@0:             mMaxColumns = context.getResources().getInteger(R.integer.max_icon_grid_columns);
michael@0:         }
michael@0: 
michael@0:         // TODO: Dynamically handle size changes
michael@0:         final WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
michael@0:         final Display display = wm.getDefaultDisplay();
michael@0:         final int screenWidth = display.getWidth();
michael@0:         int maxColumns = Math.min(mMaxColumns, screenWidth / mColumnWidth);
michael@0: 
michael@0:         final GridView view = (GridView) LayoutInflater.from(context).inflate(R.layout.icon_grid, null, false);
michael@0:         view.setColumnWidth(mColumnWidth);
michael@0: 
michael@0:         final ArrayList<IconGridItem> items = new ArrayList<IconGridItem>(mArray.length());
michael@0:         for (int i = 0; i < mArray.length(); i++) {
michael@0:             IconGridItem item = new IconGridItem(context, mArray.optJSONObject(i));
michael@0:             items.add(item);
michael@0:             if (item.selected) {
michael@0:                 mSelected = i;
michael@0:                 view.setSelection(i);
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         view.setNumColumns(Math.min(items.size(), maxColumns));
michael@0:         view.setOnItemClickListener(this);
michael@0: 
michael@0:         mAdapter = new IconGridAdapter(context, -1, items);
michael@0:         view.setAdapter(mAdapter);
michael@0:         mView = view;
michael@0:         return mView;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
michael@0:         mSelected = position;
michael@0:         notifyListeners(Integer.toString(position));
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public Object getValue() {
michael@0:         return new Integer(mSelected);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public boolean getScrollable() {
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     private class IconGridAdapter extends ArrayAdapter<IconGridItem> {
michael@0:         public IconGridAdapter(Context context, int resource, List<IconGridItem> items) {
michael@0:             super(context, resource, items);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public View getView(int position, View convert, ViewGroup parent) {
michael@0:             final Context context = parent.getContext();
michael@0:             if (convert == null) {
michael@0:                 convert = LayoutInflater.from(context).inflate(R.layout.icon_grid_item, parent, false);
michael@0:             }
michael@0:             bindView(convert, context, position);
michael@0:             return convert;
michael@0:         }
michael@0: 
michael@0:         private void bindView(View v, Context c, int position) {
michael@0:             final IconGridItem item = getItem(position);
michael@0:             final TextView text1 = (TextView) v.findViewById(android.R.id.text1);
michael@0:             text1.setText(item.label);
michael@0: 
michael@0:             final TextView text2 = (TextView) v.findViewById(android.R.id.text2);
michael@0:             if (TextUtils.isEmpty(item.description)) {
michael@0:                 text2.setVisibility(View.GONE);
michael@0:             } else {
michael@0:                 text2.setVisibility(View.VISIBLE);
michael@0:                 text2.setText(item.description);
michael@0:             }
michael@0: 
michael@0:             final ImageView icon = (ImageView) v.findViewById(R.id.icon);
michael@0:             icon.setImageDrawable(item.icon);
michael@0:             ViewGroup.LayoutParams lp = icon.getLayoutParams();
michael@0:             lp.width = lp.height = mIconSize;
michael@0:         }
michael@0:     }
michael@0:  
michael@0:     private class IconGridItem {
michael@0:         final String label;
michael@0:         final String description;
michael@0:         final boolean selected;
michael@0:         Drawable icon;
michael@0: 
michael@0:         public IconGridItem(final Context context, final JSONObject obj) {
michael@0:             label = obj.optString("name");
michael@0:             final String iconUrl = obj.optString("iconUri");
michael@0:             description = obj.optString("description");
michael@0:             selected = obj.optBoolean("selected");
michael@0: 
michael@0:             BitmapUtils.getDrawable(context, iconUrl, new BitmapUtils.BitmapLoader() {
michael@0:                 public void onBitmapFound(Drawable d) {
michael@0:                     icon = d;
michael@0:                     if (mAdapter != null) {
michael@0:                         mAdapter.notifyDataSetChanged();
michael@0:                     }
michael@0:                 }
michael@0:             });
michael@0:         }
michael@0:     }
michael@0: }