gecko-dev/mobile/android/base/widget/TopSitesView.java

684 lines
26 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.widget;
import org.mozilla.gecko.AwesomeBar;
import org.mozilla.gecko.BrowserApp;
import org.mozilla.gecko.GeckoAppShell;
import org.mozilla.gecko.R;
import org.mozilla.gecko.Tabs;
import org.mozilla.gecko.ThumbnailHelper;
import org.mozilla.gecko.db.BrowserContract.Thumbnails;
import org.mozilla.gecko.db.BrowserDB;
import org.mozilla.gecko.db.BrowserDB.TopSitesCursorWrapper;
import org.mozilla.gecko.db.BrowserDB.URLColumns;
import org.mozilla.gecko.gfx.BitmapUtils;
import org.mozilla.gecko.util.ActivityResultHandler;
import org.mozilla.gecko.util.ThreadUtils;
import org.mozilla.gecko.util.UiAsyncTask;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.PathShape;
import android.net.Uri;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class TopSitesView extends GridView {
private static final String LOGTAG = "GeckoAboutHomeTopSites";
private static int mNumberOfTopSites;
private static int mNumberOfCols;
public static enum UnpinFlags {
REMOVE_PIN
}
private Context mContext;
private BrowserApp mActivity;
private AboutHome.UriLoadListener mUriLoadListener;
private AboutHome.LoadCompleteListener mLoadCompleteListener;
protected TopSitesCursorAdapter mTopSitesAdapter;
private static Drawable sPinDrawable = null;
private int mThumbnailBackground;
private Map<String, Bitmap> mPendingThumbnails;
public TopSitesView(Context context) {
super(context);
mContext = context;
mActivity = (BrowserApp) context;
init();
}
public TopSitesView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mActivity = (BrowserApp) context;
init();
}
private void init() {
mThumbnailBackground = mContext.getResources().getColor(R.color.abouthome_thumbnail_bg);
setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
TopSitesViewHolder holder = (TopSitesViewHolder) v.getTag();
String spec = holder.getUrl();
// If we don't have a url, this must be an empty row. Show the edit dialog box
if (TextUtils.isEmpty(spec)) {
editSite(spec, position);
return;
}
if (mUriLoadListener != null) {
// Decode "user-entered" URLs before loading them.
mUriLoadListener.onAboutHomeUriLoad(decodeUserEnteredUrl(spec));
}
}
});
setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
MenuInflater inflater = mActivity.getMenuInflater();
inflater.inflate(R.menu.abouthome_topsites_contextmenu, menu);
// If nothing is pinned at all, hide both clear items
// We can assume that the adapter count and view count are the same in this case because our grid view
// force all items to be visible all the time
View view = getChildAt(info.position);
TopSitesViewHolder holder = (TopSitesViewHolder) view.getTag();
if (TextUtils.isEmpty(holder.getUrl())) {
menu.findItem(R.id.abouthome_open_new_tab).setVisible(false);
menu.findItem(R.id.abouthome_open_private_tab).setVisible(false);
menu.findItem(R.id.abouthome_topsites_pin).setVisible(false);
menu.findItem(R.id.abouthome_topsites_unpin).setVisible(false);
} else if (holder.isPinned()) {
menu.findItem(R.id.abouthome_topsites_pin).setVisible(false);
} else {
menu.findItem(R.id.abouthome_topsites_unpin).setVisible(false);
}
}
});
setTopSitesConstants();
}
public void onDestroy() {
if (mTopSitesAdapter != null) {
setAdapter(null);
final Cursor cursor = mTopSitesAdapter.getCursor();
ThreadUtils.postToBackgroundThread(new Runnable() {
@Override
public void run() {
if (cursor != null && !cursor.isClosed())
cursor.close();
}
});
}
}
@Override
public int getColumnWidth() {
return getColumnWidth(getWidth());
}
public int getColumnWidth(int width) {
// super.getColumnWidth() doesn't always return the correct value.
return (width - getPaddingLeft() - getPaddingRight()) / mNumberOfCols;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = View.MeasureSpec.getSize(widthMeasureSpec);
int numRows;
SimpleCursorAdapter adapter = (SimpleCursorAdapter) getAdapter();
int nSites = Integer.MAX_VALUE;
if (adapter != null) {
Cursor c = adapter.getCursor();
if (c != null)
nSites = c.getCount();
}
nSites = Math.min(nSites, mNumberOfTopSites);
numRows = (int) Math.round((double) nSites / mNumberOfCols);
setNumColumns(mNumberOfCols);
// Just using getWidth() will use incorrect values during onMeasure when rotating the device
// Instead we pass in the measuredWidth, which is correct
int w = getColumnWidth(measuredWidth);
ThumbnailHelper.getInstance().setThumbnailWidth(w);
heightMeasureSpec = MeasureSpec.makeMeasureSpec((int)(w*ThumbnailHelper.THUMBNAIL_ASPECT_RATIO*numRows) + getPaddingTop() + getPaddingBottom(),
MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public void loadTopSites() {
ThreadUtils.postToBackgroundThread(new Runnable() {
@Override
public void run() {
final ContentResolver resolver = mContext.getContentResolver();
// Swap in the new cursor.
final Cursor oldCursor = (mTopSitesAdapter != null) ? mTopSitesAdapter.getCursor() : null;
final Cursor newCursor = BrowserDB.getTopSites(resolver, mNumberOfTopSites);
post(new Runnable() {
@Override
public void run() {
if (mTopSitesAdapter == null) {
mTopSitesAdapter = new TopSitesCursorAdapter(mContext,
R.layout.abouthome_topsite_item,
newCursor,
new String[] { URLColumns.TITLE },
new int[] { R.id.title });
setAdapter(mTopSitesAdapter);
} else {
mTopSitesAdapter.changeCursor(newCursor);
}
if (mTopSitesAdapter.getCount() > 0)
loadTopSitesThumbnails(resolver);
// Free the old Cursor in the right thread now.
if (oldCursor != null && !oldCursor.isClosed())
oldCursor.close();
// Even if AboutHome isn't necessarily entirely loaded if we
// get here, for phones this is the part the user initially sees,
// so it's the one we will care about for now.
if (mLoadCompleteListener != null)
mLoadCompleteListener.onAboutHomeLoadComplete();
}
});
}
});
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
super.onLayout(changed, l, t, r, b);
if (mPendingThumbnails != null) {
updateTopSitesThumbnails(mPendingThumbnails);
mPendingThumbnails = null;
}
}
private List<String> getTopSitesUrls() {
List<String> urls = new ArrayList<String>();
Cursor c = mTopSitesAdapter.getCursor();
if (c == null || !c.moveToFirst())
return urls;
do {
final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
urls.add(url);
} while (c.moveToNext());
return urls;
}
private void displayThumbnail(View view, Bitmap thumbnail) {
ImageView thumbnailView = (ImageView) view.findViewById(R.id.thumbnail);
if (thumbnail == null) {
thumbnailView.setScaleType(ImageView.ScaleType.FIT_CENTER);
thumbnailView.setImageResource(R.drawable.abouthome_thumbnail_bg);
thumbnailView.setBackgroundColor(mThumbnailBackground);
} else {
try {
thumbnailView.setScaleType(ImageView.ScaleType.CENTER_CROP);
thumbnailView.setImageBitmap(thumbnail);
thumbnailView.setBackgroundColor(0x0);
} catch (OutOfMemoryError oom) {
Log.e(LOGTAG, "Unable to load thumbnail bitmap", oom);
thumbnailView.setScaleType(ImageView.ScaleType.FIT_CENTER);
thumbnailView.setImageResource(R.drawable.abouthome_thumbnail_bg);
}
}
}
private void updateTopSitesThumbnails(Map<String, Bitmap> thumbnails) {
for (int i = 0; i < mTopSitesAdapter.getCount(); i++) {
final View view = getChildAt(i);
// The grid view might get temporarily out of sync with the
// adapter refreshes (e.g. on device rotation)
if (view == null)
continue;
TopSitesViewHolder holder = (TopSitesViewHolder)view.getTag();
final String url = holder.getUrl();
if (TextUtils.isEmpty(url)) {
holder.thumbnailView.setScaleType(ImageView.ScaleType.FIT_CENTER);
holder.thumbnailView.setImageResource(R.drawable.abouthome_thumbnail_add);
holder.thumbnailView.setBackgroundColor(mThumbnailBackground);
} else {
displayThumbnail(view, thumbnails.get(url));
}
}
}
public Map<String, Bitmap> getThumbnailsFromCursor(Cursor c) {
Map<String, Bitmap> thumbnails = new HashMap<String, Bitmap>();
try {
if (c == null || !c.moveToFirst())
return thumbnails;
do {
final String url = c.getString(c.getColumnIndexOrThrow(Thumbnails.URL));
final byte[] b = c.getBlob(c.getColumnIndexOrThrow(Thumbnails.DATA));
if (b == null)
continue;
Bitmap thumbnail = null;
try {
thumbnail = BitmapUtils.decodeByteArray(b);
} catch (IllegalArgumentException e) {
Log.e(LOGTAG, "Error decoding thumbnail", e);
}
if (thumbnail == null)
continue;
thumbnails.put(url, thumbnail);
} while (c.moveToNext());
} finally {
if (c != null)
c.close();
}
return thumbnails;
}
private void loadTopSitesThumbnails(final ContentResolver cr) {
final List<String> urls = getTopSitesUrls();
if (urls.size() == 0)
return;
(new UiAsyncTask<Void, Void, Map<String, Bitmap> >(ThreadUtils.getBackgroundHandler()) {
@Override
public Map<String, Bitmap> doInBackground(Void... params) {
return getThumbnailsFromCursor(BrowserDB.getThumbnailsForUrls(cr, urls));
}
@Override
public void onPostExecute(Map<String, Bitmap> thumbnails) {
// If we're waiting for a layout to happen, the GridView may be
// stale, so store the pending thumbnails here. They will be
// shown on the next layout pass.
if (isLayoutRequested()) {
mPendingThumbnails = thumbnails;
} else {
updateTopSitesThumbnails(thumbnails);
}
}
}).execute();
}
private void setTopSitesConstants() {
mNumberOfTopSites = getResources().getInteger(R.integer.number_of_top_sites);
mNumberOfCols = getResources().getInteger(R.integer.number_of_top_sites_cols);
}
public void setUriLoadListener(AboutHome.UriLoadListener uriLoadListener) {
mUriLoadListener = uriLoadListener;
}
public void setLoadCompleteListener(AboutHome.LoadCompleteListener listener) {
mLoadCompleteListener = listener;
}
private class TopSitesViewHolder {
public TextView titleView = null;
public ImageView thumbnailView = null;
public ImageView pinnedView = null;
private String mTitle = null;
private String mUrl = null;
private boolean mIsPinned = false;
public TopSitesViewHolder(View v) {
titleView = (TextView) v.findViewById(R.id.title);
thumbnailView = (ImageView) v.findViewById(R.id.thumbnail);
pinnedView = (ImageView) v.findViewById(R.id.pinned);
}
public void setTitle(String title) {
if (mTitle != null && mTitle.equals(title))
return;
mTitle = title;
updateTitleView();
}
public String getTitle() {
return (!TextUtils.isEmpty(mTitle) ? mTitle : mUrl);
}
public void setUrl(String url) {
if (mUrl != null && mUrl.equals(url)) {
return;
}
mUrl = url;
updateTitleView();
}
public String getUrl() {
return mUrl;
}
public void updateTitleView() {
String title = getTitle();
if (!TextUtils.isEmpty(title)) {
titleView.setText(title);
titleView.setVisibility(View.VISIBLE);
} else {
titleView.setVisibility(View.INVISIBLE);
}
titleView.invalidate();
}
private Drawable getPinDrawable() {
if (sPinDrawable == null) {
int size = mContext.getResources().getDimensionPixelSize(R.dimen.abouthome_topsite_pinsize);
// Draw a little triangle in the upper right corner
Path path = new Path();
path.moveTo(0, 0);
path.lineTo(size, 0);
path.lineTo(size, size);
path.close();
sPinDrawable = new ShapeDrawable(new PathShape(path, size, size));
Paint p = ((ShapeDrawable) sPinDrawable).getPaint();
p.setColor(mContext.getResources().getColor(R.color.abouthome_topsite_pin));
}
return sPinDrawable;
}
public void setPinned(boolean aPinned) {
mIsPinned = aPinned;
pinnedView.setBackgroundDrawable(aPinned ? getPinDrawable() : null);
}
public boolean isPinned() {
return mIsPinned;
}
}
public class TopSitesCursorAdapter extends SimpleCursorAdapter {
public TopSitesCursorAdapter(Context context, int layout, Cursor c,
String[] from, int[] to) {
super(context, layout, c, from, to);
}
@Override
public int getCount() {
return Math.min(super.getCount(), mNumberOfTopSites);
}
@Override
protected void onContentChanged () {
// Don't do anything. We don't want to regenerate every time
// our history database is updated.
return;
}
private View buildView(String url, String title, boolean pinned, View convertView) {
TopSitesViewHolder viewHolder;
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(R.layout.abouthome_topsite_item, null);
viewHolder = new TopSitesViewHolder(convertView);
convertView.setTag(viewHolder);
} else {
viewHolder = (TopSitesViewHolder) convertView.getTag();
}
viewHolder.setTitle(title);
viewHolder.setUrl(url);
viewHolder.setPinned(pinned);
// Force the view to fit inside this slot in the grid
convertView.setLayoutParams(new AbsListView.LayoutParams(getColumnWidth(),
Math.round(getColumnWidth()*ThumbnailHelper.THUMBNAIL_ASPECT_RATIO)));
return convertView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
String url = "";
String title = "";
boolean pinned = false;
Cursor c = getCursor();
c.moveToPosition(position);
if (!c.isAfterLast()) {
url = c.getString(c.getColumnIndex(URLColumns.URL));
title = c.getString(c.getColumnIndex(URLColumns.TITLE));
pinned = ((TopSitesCursorWrapper)c).isPinned();
}
return buildView(url, title, pinned, convertView);
}
}
private void clearThumbnailsWithUrl(final String url) {
for (int i = 0; i < mTopSitesAdapter.getCount(); i++) {
final View view = getChildAt(i);
final TopSitesViewHolder holder = (TopSitesViewHolder) view.getTag();
if (holder.getUrl().equals(url)) {
clearThumbnail(holder);
}
}
}
private void clearThumbnail(TopSitesViewHolder holder) {
holder.setTitle("");
holder.setUrl("");
holder.thumbnailView.setScaleType(ImageView.ScaleType.FIT_CENTER);
holder.thumbnailView.setImageResource(R.drawable.abouthome_thumbnail_add);
holder.thumbnailView.setBackgroundColor(mThumbnailBackground);
holder.setPinned(false);
}
private void openTab(ContextMenuInfo menuInfo, int flags) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
final TopSitesViewHolder holder = (TopSitesViewHolder) info.targetView.getTag();
// Decode "user-entered" URLs before loading them.
final String url = decodeUserEnteredUrl(holder.getUrl());
Tabs.getInstance().loadUrl(url, flags);
Toast.makeText(mActivity, R.string.new_tab_opened, Toast.LENGTH_SHORT).show();
}
public void openNewTab(ContextMenuInfo menuInfo) {
openTab(menuInfo, Tabs.LOADURL_NEW_TAB | Tabs.LOADURL_BACKGROUND);
}
public void openNewPrivateTab(ContextMenuInfo menuInfo) {
openTab(menuInfo, Tabs.LOADURL_NEW_TAB | Tabs.LOADURL_PRIVATE | Tabs.LOADURL_BACKGROUND);
}
public void unpinSite(ContextMenuInfo menuInfo, final UnpinFlags flags) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
final int position = info.position;
final View v = getChildAt(position);
final TopSitesViewHolder holder = (TopSitesViewHolder) v.getTag();
final String url = holder.getUrl();
// Quickly update the view so that there isn't as much lag between the request and response
clearThumbnail(holder);
(new UiAsyncTask<Void, Void, Void>(ThreadUtils.getBackgroundHandler()) {
@Override
public Void doInBackground(Void... params) {
final ContentResolver resolver = mContext.getContentResolver();
BrowserDB.unpinSite(resolver, position);
return null;
}
}).execute();
}
public void pinSite(ContextMenuInfo menuInfo) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
final int position = info.position;
View v = getChildAt(position);
final TopSitesViewHolder holder = (TopSitesViewHolder) v.getTag();
holder.setPinned(true);
// update the database on a background thread
(new UiAsyncTask<Void, Void, Void>(ThreadUtils.getBackgroundHandler()) {
@Override
public Void doInBackground(Void... params) {
final ContentResolver resolver = mContext.getContentResolver();
BrowserDB.pinSite(resolver, holder.getUrl(), holder.getTitle(), position);
return null;
}
}).execute();
}
private static String encodeUserEnteredUrl(String url) {
return Uri.fromParts("user-entered", url, null).toString();
}
private static String decodeUserEnteredUrl(String url) {
Uri uri = Uri.parse(url);
if ("user-entered".equals(uri.getScheme())) {
return uri.getSchemeSpecificPart();
}
return url;
}
public void editSite(ContextMenuInfo menuInfo) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
int position = info.position;
View v = getChildAt(position);
TopSitesViewHolder holder = (TopSitesViewHolder) v.getTag();
// Decode "user-entered" URLs before showing them to the user to edit.
editSite(decodeUserEnteredUrl(holder.getUrl()), position);
}
// Edit the site at position. Provide a url to start editing with
public void editSite(String url, final int position) {
Intent intent = new Intent(mContext, AwesomeBar.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.putExtra(AwesomeBar.TARGET_KEY, AwesomeBar.Target.PICK_SITE.toString());
if (url != null && !TextUtils.isEmpty(url)) {
intent.putExtra(AwesomeBar.CURRENT_URL_KEY, url);
}
int requestCode = GeckoAppShell.sActivityHelper.makeRequestCode(new ActivityResultHandler() {
@Override
public void onActivityResult(int resultCode, Intent data) {
if (resultCode == Activity.RESULT_CANCELED || data == null)
return;
final View v = getChildAt(position);
final TopSitesViewHolder holder = (TopSitesViewHolder) v.getTag();
String title = data.getStringExtra(AwesomeBar.TITLE_KEY);
String url = data.getStringExtra(AwesomeBar.URL_KEY);
// Bail if the user entered an empty string.
if (TextUtils.isEmpty(url)) {
return;
}
// If the user manually entered a search term or URL, wrap the value in
// a special URI until we can get a valid URL for this bookmark.
if (data.getBooleanExtra(AwesomeBar.USER_ENTERED_KEY, false)) {
// Store what the user typed as the bookmark's title.
title = url;
url = encodeUserEnteredUrl(url);
}
clearThumbnailsWithUrl(url);
holder.setUrl(url);
holder.setTitle(title);
holder.setPinned(true);
// update the database on a background thread
(new UiAsyncTask<Void, Void, Bitmap>(ThreadUtils.getBackgroundHandler()) {
@Override
public Bitmap doInBackground(Void... params) {
final ContentResolver resolver = mContext.getContentResolver();
BrowserDB.pinSite(resolver, holder.getUrl(), holder.getTitle(), position);
List<String> urls = new ArrayList<String>();
urls.add(holder.getUrl());
Cursor c = BrowserDB.getThumbnailsForUrls(resolver, urls);
if (c == null || !c.moveToFirst()) {
return null;
}
final byte[] b = c.getBlob(c.getColumnIndexOrThrow(Thumbnails.DATA));
Bitmap bitmap = null;
if (b != null && b.length > 0) {
bitmap = BitmapUtils.decodeByteArray(b);
}
c.close();
return bitmap;
}
@Override
public void onPostExecute(Bitmap b) {
displayThumbnail(v, b);
}
}).execute();
}
});
mActivity.startActivityForResult(intent, requestCode);
}
}