michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.home;
michael@0: 
michael@0: import java.lang.ref.WeakReference;
michael@0: 
michael@0: import org.mozilla.gecko.R;
michael@0: import org.mozilla.gecko.Tab;
michael@0: import org.mozilla.gecko.Tabs;
michael@0: import org.mozilla.gecko.db.BrowserContract.Combined;
michael@0: import org.mozilla.gecko.db.BrowserDB.URLColumns;
michael@0: import org.mozilla.gecko.favicons.Favicons;
michael@0: import org.mozilla.gecko.favicons.OnFaviconLoadedListener;
michael@0: import org.mozilla.gecko.util.ThreadUtils;
michael@0: import org.mozilla.gecko.widget.FaviconView;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.database.Cursor;
michael@0: import android.graphics.Bitmap;
michael@0: import android.text.TextUtils;
michael@0: import android.util.AttributeSet;
michael@0: import android.view.Gravity;
michael@0: import android.view.LayoutInflater;
michael@0: import android.widget.LinearLayout;
michael@0: import android.widget.TextView;
michael@0: 
michael@0: public class TwoLinePageRow extends LinearLayout
michael@0:                             implements Tabs.OnTabsChangedListener {
michael@0: 
michael@0:     protected static final int NO_ICON = 0;
michael@0: 
michael@0:     private final TextView mTitle;
michael@0:     private final TextView mUrl;
michael@0: 
michael@0:     private int mSwitchToTabIconId;
michael@0:     private int mPageTypeIconId;
michael@0: 
michael@0:     private final FaviconView mFavicon;
michael@0: 
michael@0:     private boolean mShowIcons;
michael@0:     private int mLoadFaviconJobId = Favicons.NOT_LOADING;
michael@0: 
michael@0:     // Only holds a reference to the FaviconView itself, so if the row gets
michael@0:     // discarded while a task is outstanding, we'll leak less memory.
michael@0:     private static class UpdateViewFaviconLoadedListener implements OnFaviconLoadedListener {
michael@0:         private final WeakReference<FaviconView> view;
michael@0:         public UpdateViewFaviconLoadedListener(FaviconView view) {
michael@0:             this.view = new WeakReference<FaviconView>(view);
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public void onFaviconLoaded(String url, String faviconURL, Bitmap favicon) {
michael@0:             FaviconView v = view.get();
michael@0:             if (v == null) {
michael@0:                 // Guess we stuck around after the TwoLinePageRow went away.
michael@0:                 return;
michael@0:             }
michael@0: 
michael@0:             if (favicon == null) {
michael@0:                 v.showDefaultFavicon();
michael@0:                 return;
michael@0:             }
michael@0: 
michael@0:             v.updateImage(favicon, faviconURL);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Listener for handling Favicon loads.
michael@0:     private final OnFaviconLoadedListener mFaviconListener;
michael@0: 
michael@0:     // The URL for the page corresponding to this view.
michael@0:     private String mPageUrl;
michael@0: 
michael@0:     public TwoLinePageRow(Context context) {
michael@0:         this(context, null);
michael@0:     }
michael@0: 
michael@0:     public TwoLinePageRow(Context context, AttributeSet attrs) {
michael@0:         super(context, attrs);
michael@0: 
michael@0:         setGravity(Gravity.CENTER_VERTICAL);
michael@0: 
michael@0:         LayoutInflater.from(context).inflate(R.layout.two_line_page_row, this);
michael@0:         mTitle = (TextView) findViewById(R.id.title);
michael@0:         mUrl = (TextView) findViewById(R.id.url);
michael@0: 
michael@0:         mSwitchToTabIconId = NO_ICON;
michael@0:         mPageTypeIconId = NO_ICON;
michael@0:         mShowIcons = true;
michael@0: 
michael@0:         mFavicon = (FaviconView) findViewById(R.id.icon);
michael@0:         mFaviconListener = new UpdateViewFaviconLoadedListener(mFavicon);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onAttachedToWindow() {
michael@0:         Tabs.registerOnTabsChangedListener(this);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onDetachedFromWindow() {
michael@0:         // Tabs' listener array is safe to modify during use: its
michael@0:         // iteration pattern is based on snapshots.
michael@0:         Tabs.unregisterOnTabsChangedListener(this);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onTabChanged(final Tab tab, final Tabs.TabEvents msg, final Object data) {
michael@0:         switch(msg) {
michael@0:             case ADDED:
michael@0:             case CLOSED:
michael@0:             case LOCATION_CHANGE:
michael@0:                 updateDisplayedUrl();
michael@0:                 break;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private void setTitle(String text) {
michael@0:         mTitle.setText(text);
michael@0:     }
michael@0: 
michael@0:     protected void setUrl(String text) {
michael@0:         mUrl.setText(text);
michael@0:     }
michael@0: 
michael@0:     protected void setUrl(int stringId) {
michael@0:         mUrl.setText(stringId);
michael@0:     }
michael@0: 
michael@0:     protected String getUrl() {
michael@0:         return mPageUrl;
michael@0:     }
michael@0: 
michael@0:     protected void setSwitchToTabIcon(int iconId) {
michael@0:         if (mSwitchToTabIconId == iconId) {
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         mSwitchToTabIconId = iconId;
michael@0:         mUrl.setCompoundDrawablesWithIntrinsicBounds(mSwitchToTabIconId, 0, mPageTypeIconId, 0);
michael@0:     }
michael@0: 
michael@0:     private void setPageTypeIcon(int iconId) {
michael@0:         if (mPageTypeIconId == iconId) {
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         mPageTypeIconId = iconId;
michael@0:         mUrl.setCompoundDrawablesWithIntrinsicBounds(mSwitchToTabIconId, 0, mPageTypeIconId, 0);
michael@0:     }
michael@0: 
michael@0:     /**
michael@0:      * Stores the page URL, so that we can use it to replace "Switch to tab" if the open
michael@0:      * tab changes or is closed.
michael@0:      */
michael@0:     private void updateDisplayedUrl(String url) {
michael@0:         mPageUrl = url;
michael@0:         updateDisplayedUrl();
michael@0:     }
michael@0: 
michael@0:     /**
michael@0:      * Replaces the page URL with "Switch to tab" if there is already a tab open with that URL.
michael@0:      * Only looks for tabs that are either private or non-private, depending on the current
michael@0:      * selected tab.
michael@0:      */
michael@0:     protected void updateDisplayedUrl() {
michael@0:         boolean isPrivate = Tabs.getInstance().getSelectedTab().isPrivate();
michael@0:         Tab tab = Tabs.getInstance().getFirstTabForUrl(mPageUrl, isPrivate);
michael@0:         if (!mShowIcons || tab == null) {
michael@0:             setUrl(mPageUrl);
michael@0:             setSwitchToTabIcon(NO_ICON);
michael@0:         } else {
michael@0:             setUrl(R.string.switch_to_tab);
michael@0:             setSwitchToTabIcon(R.drawable.ic_url_bar_tab);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public void setShowIcons(boolean showIcons) {
michael@0:         mShowIcons = showIcons;
michael@0:     }
michael@0: 
michael@0:     public void updateFromCursor(Cursor cursor) {
michael@0:         if (cursor == null) {
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         int titleIndex = cursor.getColumnIndexOrThrow(URLColumns.TITLE);
michael@0:         final String title = cursor.getString(titleIndex);
michael@0: 
michael@0:         int urlIndex = cursor.getColumnIndexOrThrow(URLColumns.URL);
michael@0:         final String url = cursor.getString(urlIndex);
michael@0: 
michael@0:         if (mShowIcons) {
michael@0:             final int bookmarkIdIndex = cursor.getColumnIndex(Combined.BOOKMARK_ID);
michael@0:             if (bookmarkIdIndex != -1) {
michael@0:                 final long bookmarkId = cursor.getLong(bookmarkIdIndex);
michael@0:                 final int displayIndex = cursor.getColumnIndex(Combined.DISPLAY);
michael@0: 
michael@0:                 final int display;
michael@0:                 if (displayIndex != -1) {
michael@0:                     display = cursor.getInt(displayIndex);
michael@0:                 } else {
michael@0:                     display = Combined.DISPLAY_NORMAL;
michael@0:                 }
michael@0: 
michael@0:                 // The bookmark id will be 0 (null in database) when the url
michael@0:                 // is not a bookmark.
michael@0:                 if (bookmarkId == 0) {
michael@0:                     setPageTypeIcon(NO_ICON);
michael@0:                 } else if (display == Combined.DISPLAY_READER) {
michael@0:                     setPageTypeIcon(R.drawable.ic_url_bar_reader);
michael@0:                 } else {
michael@0:                     setPageTypeIcon(R.drawable.ic_url_bar_star);
michael@0:                 }
michael@0:             } else {
michael@0:                 setPageTypeIcon(NO_ICON);
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         // Use the URL instead of an empty title for consistency with the normal URL
michael@0:         // bar view - this is the equivalent of getDisplayTitle() in Tab.java
michael@0:         setTitle(TextUtils.isEmpty(title) ? url : title);
michael@0: 
michael@0:         // No point updating the below things if URL has not changed. Prevents evil Favicon flicker.
michael@0:         if (url.equals(mPageUrl)) {
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         // Blank the Favicon, so we don't show the wrong Favicon if we scroll and miss DB.
michael@0:         mFavicon.clearImage();
michael@0:         mLoadFaviconJobId = Favicons.getSizedFaviconForPageFromLocal(url, mFaviconListener);
michael@0: 
michael@0:         updateDisplayedUrl(url);
michael@0:     }
michael@0: }