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