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Bug 737867 - Apply ViewHolder pattern in AwesomeBar's All/Bookmarks tabs (r=mfinkle)

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This commit is contained in:
Lucas Rocha 2012-03-27 18:05:41 +01:00
parent b22d1b0c98
commit 0ad9b6469c
1 changed files with 105 additions and 95 deletions
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198
mobile/android/base/AwesomeBarTabs.java
View File

@ -117,6 +117,12 @@ public class AwesomeBarTabs extends TabHost {
public void onSearch(String engine);
}
private class ViewHolder {
public TextView titleView;
public TextView urlView;
public ImageView faviconView;
}
private class HistoryListAdapter extends SimpleExpandableListAdapter {
public HistoryListAdapter(Context context, List<? extends Map<String, ?>> groupData,
int groupLayout, String[] groupFrom, int[] groupTo,
@ -152,51 +158,6 @@ public class AwesomeBarTabs extends TabHost {
}
}
private class AwesomeCursorViewBinder implements SimpleCursorAdapter.ViewBinder {
private boolean updateFavicon(View view, Cursor cursor, int faviconIndex) {
byte[] b = cursor.getBlob(faviconIndex);
ImageView favicon = (ImageView) view;
if (b == null) {
favicon.setImageDrawable(null);
} else {
Bitmap bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
favicon.setImageBitmap(bitmap);
}
return true;
}
private boolean updateTitle(View view, Cursor cursor, int titleIndex) {
String title = cursor.getString(titleIndex);
TextView titleView = (TextView)view;
// Use the URL instead of an empty title for consistency with the normal URL
// bar view - this is the equivalent of getDisplayTitle() in Tab.java
if (TextUtils.isEmpty(title)) {
int urlIndex = cursor.getColumnIndexOrThrow(URLColumns.URL);
title = cursor.getString(urlIndex);
}
titleView.setText(title);
return true;
}
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
int faviconIndex = cursor.getColumnIndexOrThrow(URLColumns.FAVICON);
if (columnIndex == faviconIndex) {
return updateFavicon(view, cursor, faviconIndex);
}
int titleIndex = cursor.getColumnIndexOrThrow(URLColumns.TITLE);
if (columnIndex == titleIndex) {
return updateTitle(view, cursor, titleIndex);
}
// Other columns are handled automatically
return false;
}
}
private class BookmarksListAdapter extends SimpleCursorAdapter {
private static final int VIEW_TYPE_ITEM = 0;
private static final int VIEW_TYPE_FOLDER = 1;
@ -207,8 +168,8 @@ public class AwesomeBarTabs extends TabHost {
private LinkedList<Pair<Integer, String>> mParentStack;
private LinearLayout mBookmarksTitleView;
public BookmarksListAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
super(context, layout, c, from, to);
public BookmarksListAdapter(Context context, Cursor c) {
super(context, -1, c, new String[] {}, new int[] {});
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mResources = mContext.getResources();
@ -294,15 +255,38 @@ public class AwesomeBarTabs extends TabHost {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
int viewType = getItemViewType(position);
ViewHolder viewHolder = null;
if (convertView == null) {
if (viewType == VIEW_TYPE_ITEM)
return super.getView(position, convertView, parent);
if (convertView == null)
convertView = mInflater.inflate(R.layout.awesomebar_row, null);
else
convertView = mInflater.inflate(R.layout.awesomebar_folder_row, null);
TextView titleView = (TextView) convertView.findViewById(R.id.title);
titleView.setText(getFolderTitle(position));
viewHolder = new ViewHolder();
viewHolder.titleView = (TextView) convertView.findViewById(R.id.title);
viewHolder.faviconView = (ImageView) convertView.findViewById(R.id.favicon);
if (viewType == VIEW_TYPE_ITEM)
viewHolder.urlView = (TextView) convertView.findViewById(R.id.url);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
Cursor cursor = getCursor();
if (!cursor.moveToPosition(position))
throw new IllegalStateException("Couldn't move cursor to position " + position);
if (viewType == VIEW_TYPE_ITEM) {
updateTitle(viewHolder.titleView, cursor);
updateUrl(viewHolder.urlView, cursor);
} else {
viewHolder.titleView.setText(getFolderTitle(position));
}
updateFavicon(viewHolder.faviconView, cursor);
return convertView;
}
@ -360,18 +344,7 @@ public class AwesomeBarTabs extends TabHost {
list.setAdapter(null);
if (mBookmarksAdapter == null) {
// Load the list using a custom adapter so we can create the bitmaps
mBookmarksAdapter = new BookmarksListAdapter(
mContext,
R.layout.awesomebar_row,
cursor,
new String[] { URLColumns.TITLE,
URLColumns.URL,
URLColumns.FAVICON },
new int[] { R.id.title, R.id.url, R.id.favicon }
);
mBookmarksAdapter.setViewBinder(new AwesomeCursorViewBinder());
mBookmarksAdapter = new BookmarksListAdapter(mContext, cursor);
} else {
mBookmarksAdapter.changeCursor(cursor);
}
@ -595,11 +568,14 @@ public class AwesomeBarTabs extends TabHost {
}
private class AwesomeBarCursorAdapter extends SimpleCursorAdapter {
private LayoutInflater mInflater;
private String mSearchTerm;
public AwesomeBarCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
super(context, layout, c, from, to);
public AwesomeBarCursorAdapter(Context context) {
super(context, -1, null, new String[] {}, new int[] {});
mSearchTerm = "";
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void filter(String searchTerm) {
@ -641,18 +617,35 @@ public class AwesomeBarTabs extends TabHost {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.awesomebar_row, null);
viewHolder = new ViewHolder();
viewHolder.titleView = (TextView) convertView.findViewById(R.id.title);
viewHolder.urlView = (TextView) convertView.findViewById(R.id.url);
viewHolder.faviconView = (ImageView) convertView.findViewById(R.id.favicon);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
final int resultCount = super.getCount();
if (position < resultCount)
return super.getView(position, convertView, parent);
if (position < resultCount) {
Cursor cursor = getCursor();
if (!cursor.moveToPosition(position))
throw new IllegalStateException("Couldn't move cursor to position " + position);
View v;
if (convertView == null)
v = newView(mContext, null, parent);
else
v = convertView;
bindSearchEngineView(position - resultCount, v);
updateTitle(viewHolder.titleView, cursor);
updateUrl(viewHolder.urlView, cursor);
updateFavicon(viewHolder.faviconView, cursor);
} else {
bindSearchEngineView(position - resultCount, viewHolder);
}
return v;
return convertView;
}
private Drawable getDrawableFromDataURI(String dataURI) {
@ -669,7 +662,7 @@ public class AwesomeBarTabs extends TabHost {
return drawable;
}
private void bindSearchEngineView(int position, View view) {
private void bindSearchEngineView(int position, ViewHolder viewHolder) {
String name;
String iconURI;
String searchText = getResources().getString(R.string.awesomebar_search_engine, mSearchTerm);
@ -682,14 +675,10 @@ public class AwesomeBarTabs extends TabHost {
return;
}
TextView titleView = (TextView) view.findViewById(R.id.title);
TextView urlView = (TextView) view.findViewById(R.id.url);
ImageView faviconView = (ImageView) view.findViewById(R.id.favicon);
titleView.setText(name);
urlView.setText(searchText);
viewHolder.titleView.setText(name);
viewHolder.urlView.setText(searchText);
Drawable drawable = getDrawableFromDataURI(iconURI);
faviconView.setImageDrawable(drawable);
viewHolder.faviconView.setImageDrawable(drawable);
}
};
@ -793,17 +782,7 @@ public class AwesomeBarTabs extends TabHost {
R.id.all_pages_list);
// Load the list using a custom adapter so we can create the bitmaps
mAllPagesCursorAdapter = new AwesomeBarCursorAdapter(
mContext,
R.layout.awesomebar_row,
null,
new String[] { URLColumns.TITLE,
URLColumns.URL,
URLColumns.FAVICON },
new int[] { R.id.title, R.id.url, R.id.favicon }
);
mAllPagesCursorAdapter.setViewBinder(new AwesomeCursorViewBinder());
mAllPagesCursorAdapter = new AwesomeBarCursorAdapter(mContext);
mAllPagesCursorAdapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
@ -922,6 +901,37 @@ public class AwesomeBarTabs extends TabHost {
}
}
private void updateFavicon(ImageView faviconView, Cursor cursor) {
byte[] b = cursor.getBlob(cursor.getColumnIndexOrThrow(URLColumns.FAVICON));
if (b == null) {
faviconView.setImageDrawable(null);
} else {
Bitmap bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
faviconView.setImageBitmap(bitmap);
}
}
private void updateTitle(TextView titleView, Cursor cursor) {
int titleIndex = cursor.getColumnIndexOrThrow(URLColumns.TITLE);
String title = cursor.getString(titleIndex);
// Use the URL instead of an empty title for consistency with the normal URL
// bar view - this is the equivalent of getDisplayTitle() in Tab.java
if (TextUtils.isEmpty(title)) {
int urlIndex = cursor.getColumnIndexOrThrow(URLColumns.URL);
title = cursor.getString(urlIndex);
}
titleView.setText(title);
}
private void updateUrl(TextView urlView, Cursor cursor) {
int urlIndex = cursor.getColumnIndexOrThrow(URLColumns.URL);
String url = cursor.getString(urlIndex);
urlView.setText(url);
}
public void setOnUrlOpenListener(OnUrlOpenListener listener) {
mUrlOpenListener = listener;
}