1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/home/HomeAdapter.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,178 @@
1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +package org.mozilla.gecko.home;
1.10 +
1.11 +import org.mozilla.gecko.home.HomeConfig.PanelConfig;
1.12 +import org.mozilla.gecko.home.HomeConfig.PanelType;
1.13 +import org.mozilla.gecko.home.HomePager;
1.14 +
1.15 +import android.content.Context;
1.16 +import android.os.Bundle;
1.17 +import android.support.v4.app.Fragment;
1.18 +import android.support.v4.app.FragmentManager;
1.19 +import android.support.v4.app.FragmentStatePagerAdapter;
1.20 +import android.view.ViewGroup;
1.21 +
1.22 +import java.util.ArrayList;
1.23 +import java.util.HashMap;
1.24 +import java.util.List;
1.25 +
1.26 +class HomeAdapter extends FragmentStatePagerAdapter {
1.27 +
1.28 + private final Context mContext;
1.29 + private final ArrayList<PanelInfo> mPanelInfos;
1.30 + private final HashMap<String, Fragment> mPanels;
1.31 +
1.32 + private boolean mCanLoadHint;
1.33 +
1.34 + private OnAddPanelListener mAddPanelListener;
1.35 +
1.36 + interface OnAddPanelListener {
1.37 + public void onAddPanel(String title);
1.38 + }
1.39 +
1.40 + public HomeAdapter(Context context, FragmentManager fm) {
1.41 + super(fm);
1.42 +
1.43 + mContext = context;
1.44 + mCanLoadHint = HomeFragment.DEFAULT_CAN_LOAD_HINT;
1.45 +
1.46 + mPanelInfos = new ArrayList<PanelInfo>();
1.47 + mPanels = new HashMap<String, Fragment>();
1.48 + }
1.49 +
1.50 + @Override
1.51 + public int getCount() {
1.52 + return mPanelInfos.size();
1.53 + }
1.54 +
1.55 + @Override
1.56 + public Fragment getItem(int position) {
1.57 + PanelInfo info = mPanelInfos.get(position);
1.58 + return Fragment.instantiate(mContext, info.getClassName(), info.getArgs());
1.59 + }
1.60 +
1.61 + @Override
1.62 + public CharSequence getPageTitle(int position) {
1.63 + if (mPanelInfos.size() > 0) {
1.64 + PanelInfo info = mPanelInfos.get(position);
1.65 + return info.getTitle().toUpperCase();
1.66 + }
1.67 +
1.68 + return null;
1.69 + }
1.70 +
1.71 + @Override
1.72 + public Object instantiateItem(ViewGroup container, int position) {
1.73 + Fragment fragment = (Fragment) super.instantiateItem(container, position);
1.74 + mPanels.put(mPanelInfos.get(position).getId(), fragment);
1.75 +
1.76 + return fragment;
1.77 + }
1.78 +
1.79 + @Override
1.80 + public void destroyItem(ViewGroup container, int position, Object object) {
1.81 + super.destroyItem(container, position, object);
1.82 + mPanels.remove(mPanelInfos.get(position).getId());
1.83 + }
1.84 +
1.85 + public void setOnAddPanelListener(OnAddPanelListener listener) {
1.86 + mAddPanelListener = listener;
1.87 + }
1.88 +
1.89 + public int getItemPosition(String panelId) {
1.90 + for (int i = 0; i < mPanelInfos.size(); i++) {
1.91 + final String id = mPanelInfos.get(i).getId();
1.92 + if (id.equals(panelId)) {
1.93 + return i;
1.94 + }
1.95 + }
1.96 +
1.97 + return -1;
1.98 + }
1.99 +
1.100 + public String getPanelIdAtPosition(int position) {
1.101 + // getPanelIdAtPosition() might be called before HomeAdapter
1.102 + // has got its initial list of PanelConfigs. Just bail.
1.103 + if (mPanelInfos.isEmpty()) {
1.104 + return null;
1.105 + }
1.106 +
1.107 + return mPanelInfos.get(position).getId();
1.108 + }
1.109 +
1.110 + private void addPanel(PanelInfo info) {
1.111 + mPanelInfos.add(info);
1.112 +
1.113 + if (mAddPanelListener != null) {
1.114 + mAddPanelListener.onAddPanel(info.getTitle());
1.115 + }
1.116 + }
1.117 +
1.118 + public void update(List<PanelConfig> panelConfigs) {
1.119 + mPanels.clear();
1.120 + mPanelInfos.clear();
1.121 +
1.122 + if (panelConfigs != null) {
1.123 + for (PanelConfig panelConfig : panelConfigs) {
1.124 + final PanelInfo info = new PanelInfo(panelConfig);
1.125 + addPanel(info);
1.126 + }
1.127 + }
1.128 +
1.129 + notifyDataSetChanged();
1.130 + }
1.131 +
1.132 + public boolean getCanLoadHint() {
1.133 + return mCanLoadHint;
1.134 + }
1.135 +
1.136 + public void setCanLoadHint(boolean canLoadHint) {
1.137 + // We cache the last hint value so that we can use it when
1.138 + // creating new panels. See PanelInfo.getArgs().
1.139 + mCanLoadHint = canLoadHint;
1.140 +
1.141 + // Enable/disable loading on all existing panels
1.142 + for (Fragment panelFragment : mPanels.values()) {
1.143 + final HomeFragment panel = (HomeFragment) panelFragment;
1.144 + panel.setCanLoadHint(canLoadHint);
1.145 + }
1.146 + }
1.147 +
1.148 + private final class PanelInfo {
1.149 + private final PanelConfig mPanelConfig;
1.150 +
1.151 + PanelInfo(PanelConfig panelConfig) {
1.152 + mPanelConfig = panelConfig;
1.153 + }
1.154 +
1.155 + public String getId() {
1.156 + return mPanelConfig.getId();
1.157 + }
1.158 +
1.159 + public String getTitle() {
1.160 + return mPanelConfig.getTitle();
1.161 + }
1.162 +
1.163 + public String getClassName() {
1.164 + final PanelType type = mPanelConfig.getType();
1.165 + return type.getPanelClass().getName();
1.166 + }
1.167 +
1.168 + public Bundle getArgs() {
1.169 + final Bundle args = new Bundle();
1.170 +
1.171 + args.putBoolean(HomePager.CAN_LOAD_ARG, mCanLoadHint);
1.172 +
1.173 + // Only DynamicPanels need the PanelConfig argument
1.174 + if (mPanelConfig.isDynamic()) {
1.175 + args.putParcelable(HomePager.PANEL_CONFIG_ARG, mPanelConfig);
1.176 + }
1.177 +
1.178 + return args;
1.179 + }
1.180 + }
1.181 +}
