The Tor Browser / file comparison
comparison: mobile/android/base/home/PanelRefreshLayout.java
mobile/android/base/home/PanelRefreshLayout.java
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| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.home; | |
| 7 | |
| 8 import org.mozilla.gecko.R; | |
| 9 | |
| 10 import org.mozilla.gecko.GeckoAppShell; | |
| 11 import org.mozilla.gecko.GeckoEvent; | |
| 12 import org.mozilla.gecko.home.PanelLayout.DatasetBacked; | |
| 13 import org.mozilla.gecko.home.PanelLayout.FilterManager; | |
| 14 import org.mozilla.gecko.widget.GeckoSwipeRefreshLayout; | |
| 15 import org.mozilla.gecko.widget.GeckoSwipeRefreshLayout.OnRefreshListener; | |
| 16 | |
| 17 import org.json.JSONException; | |
| 18 import org.json.JSONObject; | |
| 19 | |
| 20 import android.content.Context; | |
| 21 import android.database.Cursor; | |
| 22 import android.util.Log; | |
| 23 import android.view.View; | |
| 24 | |
| 25 /** | |
| 26 * Used to wrap a {@code DatasetBacked} ListView or GridView to give the child view swipe-to-refresh | |
| 27 * capabilities. | |
| 28 * | |
| 29 * This view acts as a decorator to forward the {@code DatasetBacked} methods to the child view | |
| 30 * while providing the refresh gesture support on top of it. | |
| 31 */ | |
| 32 class PanelRefreshLayout extends GeckoSwipeRefreshLayout implements DatasetBacked { | |
| 33 private static final String LOGTAG = "GeckoPanelRefreshLayout"; | |
| 34 | |
| 35 private static final String JSON_KEY_PANEL_ID = "panelId"; | |
| 36 private static final String JSON_KEY_VIEW_INDEX = "viewIndex"; | |
| 37 | |
| 38 private final String panelId; | |
| 39 private final int viewIndex; | |
| 40 private final DatasetBacked datasetBacked; | |
| 41 | |
| 42 /** | |
| 43 * @param context Android context. | |
| 44 * @param childView ListView or GridView. Must implement {@code DatasetBacked}. | |
| 45 * @param panelId The ID from the {@code PanelConfig}. | |
| 46 * @param viewIndex The index from the {@code ViewConfig}. | |
| 47 */ | |
| 48 public PanelRefreshLayout(Context context, View childView, String panelId, int viewIndex) { | |
| 49 super(context); | |
| 50 | |
| 51 if (!(childView instanceof DatasetBacked)) { | |
| 52 throw new IllegalArgumentException("View must implement DatasetBacked to be refreshed"); | |
| 53 } | |
| 54 | |
| 55 this.panelId = panelId; | |
| 56 this.viewIndex = viewIndex; | |
| 57 this.datasetBacked = (DatasetBacked) childView; | |
| 58 | |
| 59 setOnRefreshListener(new RefreshListener()); | |
| 60 addView(childView); | |
| 61 | |
| 62 // Must be called after the child view has been added. | |
| 63 setColorScheme(R.color.swipe_refresh_orange, R.color.swipe_refresh_white, | |
| 64 R.color.swipe_refresh_orange, R.color.swipe_refresh_white); | |
| 65 } | |
| 66 | |
| 67 @Override | |
| 68 public void setDataset(Cursor cursor) { | |
| 69 datasetBacked.setDataset(cursor); | |
| 70 setRefreshing(false); | |
| 71 } | |
| 72 | |
| 73 @Override | |
| 74 public void setFilterManager(FilterManager manager) { | |
| 75 datasetBacked.setFilterManager(manager); | |
| 76 } | |
| 77 | |
| 78 private class RefreshListener implements OnRefreshListener { | |
| 79 @Override | |
| 80 public void onRefresh() { | |
| 81 final JSONObject response = new JSONObject(); | |
| 82 try { | |
| 83 response.put(JSON_KEY_PANEL_ID, panelId); | |
| 84 response.put(JSON_KEY_VIEW_INDEX, viewIndex); | |
| 85 } catch (JSONException e) { | |
| 86 Log.e(LOGTAG, "Could not create refresh message", e); | |
| 87 return; | |
| 88 } | |
| 89 | |
| 90 final GeckoEvent event = | |
| 91 GeckoEvent.createBroadcastEvent("HomePanels:RefreshView", response.toString()); | |
| 92 GeckoAppShell.sendEventToGecko(event); | |
| 93 } | |
| 94 } | |
| 95 } |
