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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.browser;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Handler;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
public class ActiveTabsPage extends LinearLayout {
private static final String LOGTAG = "TabPicker";
private final LayoutInflater mFactory;
private final UiController mUiController;
private final TabControl mControl;
private final TabsListAdapter mAdapter;
private final ListView mListView;
public ActiveTabsPage(Context context, UiController control) {
super(context);
mUiController = control;
mControl = control.getTabControl();
mFactory = LayoutInflater.from(context);
mFactory.inflate(R.layout.active_tabs, this);
mListView = (ListView) findViewById(R.id.list);
mAdapter = new TabsListAdapter();
mListView.setAdapter(mAdapter);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
if (mControl.canCreateNewTab()) {
position -= 2;
}
boolean needToAttach = false;
if (position == -2) {
// Create a new tab
mUiController.openTabToHomePage();
} else if (position == -1) {
// Create a new incognito tab
mUiController.openIncognitoTab();
} else {
// Open the corresponding tab
// If the tab is the current one, switchToTab will
// do nothing and return, so we need to make sure
// it gets attached back to its mContentView in
// removeActiveTabPage
needToAttach = !mUiController.switchToTab(position);
}
mUiController.removeActiveTabsPage(needToAttach);
}
});
}
/**
* Special class to hold the close drawable. Its sole purpose is to allow
* the parent to be pressed without being pressed itself. This way the line
* of a tab can be pressed, but the close button itself is not.
*/
private static class CloseHolder extends ImageView {
public CloseHolder(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void setPressed(boolean pressed) {
// If the parent is pressed, do not set to pressed.
if (pressed && ((View) getParent()).isPressed()) {
return;
}
super.setPressed(pressed);
}
}
private class TabsListAdapter extends BaseAdapter {
private boolean mNotified = true;
private int mReturnedCount;
private Handler mHandler = new Handler();
public int getCount() {
int count = mControl.getTabCount();
if (mControl.canCreateNewTab()) {
count += 2;
}
// XXX: This is a workaround to be more like a real adapter. Most
// adapters call notifyDataSetChanged() whenever the internal data
// has changed. Since TabControl is our internal data, we don't
// know when that changes.
//
// Keep track of the last count we returned and whether we called
// notifyDataSetChanged(). If we did not initiate a data set
// change, and the count is different, send the notify and return
// the old count.
if (!mNotified && count != mReturnedCount) {
notifyChange();
return mReturnedCount;
}
mReturnedCount = count;
mNotified = false;
return count;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return position;
}
public int getViewTypeCount() {
return 2;
}
public int getItemViewType(int position) {
if (mControl.canCreateNewTab()) {
position -= 2;
}
// Do not recycle the "add new tab" item.
return position < 0 ? IGNORE_ITEM_VIEW_TYPE : 1;
}
public View getView(int position, View convertView, ViewGroup parent) {
final int tabCount = mControl.getTabCount();
if (mControl.canCreateNewTab()) {
position -= 2;
}
if (convertView == null) {
if (position == -2) {
convertView = mFactory.inflate(R.layout.tab_view_add_tab, null);
} else if (position == -1) {
convertView = mFactory.inflate(R.layout.tab_view_add_incognito_tab, null);
} else {
convertView = mFactory.inflate(R.layout.tab_view, null);
}
}
if (position >= 0) {
TextView title =
(TextView) convertView.findViewById(R.id.title);
TextView url = (TextView) convertView.findViewById(R.id.url);
ImageView favicon =
(ImageView) convertView.findViewById(R.id.favicon);
View close = convertView.findViewById(R.id.close);
Tab tab = mControl.getTab(position);
if (tab.getWebView() == null) {
// This means that populatePickerData will have to use the
// saved state.
Log.w(LOGTAG, "Tab " + position + " has a null WebView and "
+ (tab.getSavedState() == null ? "null" : "non-null")
+ " saved state ");
}
if (tab.getTitle() == null || tab.getTitle().length() == 0) {
Log.w(LOGTAG, "Tab " + position + " has no title. "
+ "Check above in the Logs to see whether it has a "
+ "null WebView or null WebHistoryItem");
}
title.setText(tab.getTitle());
url.setText(tab.getUrl());
Bitmap icon = tab.getFavicon();
if (icon != null) {
favicon.setImageBitmap(icon);
} else {
favicon.setImageResource(R.drawable.app_web_browser_sm);
}
final int closePosition = position;
close.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mUiController.closeTab(
mControl.getTab(closePosition));
if (tabCount == 1) {
mUiController.openTabToHomePage();
mUiController.removeActiveTabsPage(false);
} else {
mNotified = true;
notifyDataSetChanged();
}
}
});
}
return convertView;
}
void notifyChange() {
mHandler.post(new Runnable() {
public void run() {
mNotified = true;
notifyDataSetChanged();
}
});
}
}
}
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