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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.home;
import org.mozilla.gecko.R;
import org.mozilla.gecko.GeckoAppShell;
import org.mozilla.gecko.home.PanelLayout.DatasetBacked;
import org.mozilla.gecko.home.PanelLayout.FilterManager;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.database.Cursor;
import android.support.v4.widget.SwipeRefreshLayout;
import android.util.Log;
import android.view.View;
/**
* Used to wrap a {@code DatasetBacked} ListView or GridView to give the child view swipe-to-refresh
* capabilities.
*
* This view acts as a decorator to forward the {@code DatasetBacked} methods to the child view
* while providing the refresh gesture support on top of it.
*/
class PanelRefreshLayout extends SwipeRefreshLayout implements DatasetBacked {
private static final String LOGTAG = "GeckoPanelRefreshLayout";
private static final String JSON_KEY_PANEL_ID = "panelId";
private static final String JSON_KEY_VIEW_INDEX = "viewIndex";
private final String panelId;
private final int viewIndex;
private final DatasetBacked datasetBacked;
/**
* @param context Android context.
* @param childView ListView or GridView. Must implement {@code DatasetBacked}.
* @param panelId The ID from the {@code PanelConfig}.
* @param viewIndex The index from the {@code ViewConfig}.
*/
public PanelRefreshLayout(Context context, View childView, String panelId, int viewIndex) {
super(context);
if (!(childView instanceof DatasetBacked)) {
throw new IllegalArgumentException("View must implement DatasetBacked to be refreshed");
}
this.panelId = panelId;
this.viewIndex = viewIndex;
this.datasetBacked = (DatasetBacked) childView;
setOnRefreshListener(new RefreshListener());
addView(childView);
// Must be called after the child view has been added.
setColorSchemeResources(R.color.fennec_ui_orange, R.color.action_orange);
}
@Override
public void setDataset(Cursor cursor) {
datasetBacked.setDataset(cursor);
setRefreshing(false);
}
@Override
public void setFilterManager(FilterManager manager) {
datasetBacked.setFilterManager(manager);
}
private class RefreshListener implements OnRefreshListener {
@Override
public void onRefresh() {
final JSONObject response = new JSONObject();
try {
response.put(JSON_KEY_PANEL_ID, panelId);
response.put(JSON_KEY_VIEW_INDEX, viewIndex);
} catch (JSONException e) {
Log.e(LOGTAG, "Could not create refresh message", e);
return;
}
GeckoAppShell.notifyObservers("HomePanels:RefreshView", response.toString());
}
}
}
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