1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/prompts/IntentChooserPrompt.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,159 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +package org.mozilla.gecko.prompts;
1.9 +
1.10 +import org.mozilla.gecko.GeckoAppShell;
1.11 +import org.mozilla.gecko.util.ThreadUtils;
1.12 +import org.mozilla.gecko.widget.GeckoActionProvider;
1.13 +
1.14 +import android.app.Activity;
1.15 +import android.content.ComponentName;
1.16 +import android.content.Context;
1.17 +import android.content.Intent;
1.18 +import android.content.pm.PackageManager;
1.19 +import android.content.pm.ResolveInfo;
1.20 +import android.widget.ListView;
1.21 +import android.util.Log;
1.22 +
1.23 +import org.json.JSONException;
1.24 +import org.json.JSONObject;
1.25 +
1.26 +import java.util.ArrayList;
1.27 +import java.util.List;
1.28 +
1.29 +/**
1.30 + * Shows a prompt letting the user pick from a list of intent handlers for a set of Intents or
1.31 + * for a GeckoActionProvider. Basic usage:
1.32 + * IntentChooserPrompt prompt = new IntentChooserPrompt(context, new Intent[] {
1.33 + * ... // some intents
1.34 + * });
1.35 + * prompt.show("Title", context, new IntentHandler() {
1.36 + * public void onIntentSelected(Intent intent, int position) { }
1.37 + * public void onCancelled() { }
1.38 + * });
1.39 + **/
1.40 +public class IntentChooserPrompt {
1.41 + private static final String LOGTAG = "GeckoIntentChooser";
1.42 +
1.43 + private final ArrayList<PromptListItem> mItems;
1.44 +
1.45 + public IntentChooserPrompt(Context context, Intent[] intents) {
1.46 + mItems = getItems(context, intents);
1.47 + }
1.48 +
1.49 + public IntentChooserPrompt(Context context, GeckoActionProvider provider) {
1.50 + mItems = getItems(context, provider);
1.51 + }
1.52 +
1.53 + /* If an IntentHandler is passed in, will asynchronously call the handler when the dialog is closed
1.54 + * Otherwise, will return the Intent that was chosen by the user. Must be called on the UI thread.
1.55 + */
1.56 + public void show(final String title, final Context context, final IntentHandler handler) {
1.57 + ThreadUtils.assertOnUiThread();
1.58 +
1.59 + if (mItems.isEmpty()) {
1.60 + Log.i(LOGTAG, "No activities for the intent chooser!");
1.61 + handler.onCancelled();
1.62 + return;
1.63 + }
1.64 +
1.65 + // If there's only one item in the intent list, just return it
1.66 + if (mItems.size() == 1) {
1.67 + handler.onIntentSelected(mItems.get(0).getIntent(), 0);
1.68 + return;
1.69 + }
1.70 +
1.71 + final Prompt prompt = new Prompt(context, new Prompt.PromptCallback() {
1.72 + @Override
1.73 + public void onPromptFinished(String promptServiceResult) {
1.74 + if (handler == null) {
1.75 + return;
1.76 + }
1.77 +
1.78 + int itemId = -1;
1.79 + try {
1.80 + itemId = new JSONObject(promptServiceResult).getInt("button");
1.81 + } catch (JSONException e) {
1.82 + Log.e(LOGTAG, "result from promptservice was invalid: ", e);
1.83 + }
1.84 +
1.85 + if (itemId == -1) {
1.86 + handler.onCancelled();
1.87 + } else {
1.88 + handler.onIntentSelected(mItems.get(itemId).getIntent(), itemId);
1.89 + }
1.90 + }
1.91 + });
1.92 +
1.93 + PromptListItem[] arrays = new PromptListItem[mItems.size()];
1.94 + mItems.toArray(arrays);
1.95 + prompt.show(title, "", arrays, ListView.CHOICE_MODE_NONE);
1.96 +
1.97 + return;
1.98 + }
1.99 +
1.100 + // Whether or not any activities were found. Useful for checking if you should try a different Intent set
1.101 + public boolean hasActivities(Context context) {
1.102 + return mItems.isEmpty();
1.103 + }
1.104 +
1.105 + // Gets a list of PromptListItems for an Intent array
1.106 + private ArrayList<PromptListItem> getItems(final Context context, Intent[] intents) {
1.107 + final ArrayList<PromptListItem> items = new ArrayList<PromptListItem>();
1.108 +
1.109 + // If we have intents, use them to build the initial list
1.110 + for (final Intent intent : intents) {
1.111 + items.addAll(getItemsForIntent(context, intent));
1.112 + }
1.113 +
1.114 + return items;
1.115 + }
1.116 +
1.117 + // Gets a list of PromptListItems for a GeckoActionProvider
1.118 + private ArrayList<PromptListItem> getItems(final Context context, final GeckoActionProvider provider) {
1.119 + final ArrayList<PromptListItem> items = new ArrayList<PromptListItem>();
1.120 +
1.121 + // Add any intents from the provider.
1.122 + final PackageManager packageManager = context.getPackageManager();
1.123 + final ArrayList<ResolveInfo> infos = provider.getSortedActivites();
1.124 +
1.125 + for (final ResolveInfo info : infos) {
1.126 + items.add(getItemForResolveInfo(info, packageManager, provider.getIntent()));
1.127 + }
1.128 +
1.129 + return items;
1.130 + }
1.131 +
1.132 + private PromptListItem getItemForResolveInfo(ResolveInfo info, PackageManager pm, Intent intent) {
1.133 + PromptListItem item = new PromptListItem(info.loadLabel(pm).toString());
1.134 + item.setIcon(info.loadIcon(pm));
1.135 +
1.136 + Intent i = new Intent(intent);
1.137 + // These intents should be implicit.
1.138 + i.setComponent(new ComponentName(info.activityInfo.applicationInfo.packageName,
1.139 + info.activityInfo.name));
1.140 + item.setIntent(new Intent(i));
1.141 +
1.142 + return item;
1.143 + }
1.144 +
1.145 + private ArrayList<PromptListItem> getItemsForIntent(Context context, Intent intent) {
1.146 + ArrayList<PromptListItem> items = new ArrayList<PromptListItem>();
1.147 + PackageManager pm = context.getPackageManager();
1.148 + List<ResolveInfo> lri = pm.queryIntentActivityOptions(GeckoAppShell.getGeckoInterface().getActivity().getComponentName(), null, intent, 0);
1.149 +
1.150 + // If we didn't find any activities, just return the empty list
1.151 + if (lri == null) {
1.152 + return items;
1.153 + }
1.154 +
1.155 + // Otherwise, convert the ResolveInfo. Note we don't currently check for duplicates here.
1.156 + for (ResolveInfo ri : lri) {
1.157 + items.add(getItemForResolveInfo(ri, pm, intent));
1.158 + }
1.159 +
1.160 + return items;
1.161 + }
1.162 +}
