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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | ba6d7b853c32ad6c3be26c443daa61f322bcfdc2 (patch) | |
tree | 1bb508b3b9cecf0b9f69271d4c4e953a5b5556f5 /src/com/android/browser/ImageAdapter.java | |
download | android_packages_apps_Gello-ba6d7b853c32ad6c3be26c443daa61f322bcfdc2.tar.gz android_packages_apps_Gello-ba6d7b853c32ad6c3be26c443daa61f322bcfdc2.tar.bz2 android_packages_apps_Gello-ba6d7b853c32ad6c3be26c443daa61f322bcfdc2.zip |
Initial Contribution
Diffstat (limited to 'src/com/android/browser/ImageAdapter.java')
-rw-r--r-- | src/com/android/browser/ImageAdapter.java | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/src/com/android/browser/ImageAdapter.java b/src/com/android/browser/ImageAdapter.java new file mode 100644 index 00000000..e6eaa75a --- /dev/null +++ b/src/com/android/browser/ImageAdapter.java @@ -0,0 +1,298 @@ +/* + * Copyright (C) 2008 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.app.AlertDialog; +import android.content.DialogInterface; +import android.database.DataSetObserver; +import android.graphics.Color; +import android.view.KeyEvent; +import android.view.View; +import android.view.ViewGroup; +import android.view.LayoutInflater; +import android.content.Context; +import android.content.res.Configuration; +import android.content.res.Resources; +import android.webkit.WebView; +import android.widget.*; + +import java.util.ArrayList; + +/** + * Adapter used by ImageGrid. + */ +public class ImageAdapter implements ListAdapter { + + ArrayList<TabControl.Tab> mItems; // Items shown in the grid + ArrayList<DataSetObserver> mDataObservers; // Data change listeners + Context mContext; // Context to use to inflate views + boolean mMaxedOut; + boolean mLandScape; + ImageGrid mImageGrid; + boolean mIsLive; + + ImageAdapter(Context context, ImageGrid grid, + ArrayList<TabControl.Tab> items, boolean live) { + mContext = context; + mIsLive = live; + if (items == null) { + mItems = new ArrayList<TabControl.Tab>(); + } else { + mItems = items; + if (items.size() == TabControl.MAX_TABS) { + mMaxedOut = true; + } + } + mImageGrid = grid; + mDataObservers = new ArrayList<DataSetObserver>(); + mLandScape = context.getResources().getConfiguration().orientation == + Configuration.ORIENTATION_LANDSCAPE; + } + + /** + * Whether the adapter is at its limit, determined by TabControl.MAX_TABS + * + * @return True if the number of Tabs represented in this Adapter is at its + * maximum. + */ + public boolean maxedOut() { + return mMaxedOut; + } + + /** + * Clear the internal WebViews and remove their picture listeners. + */ + public void clear() { + for (TabControl.Tab t : mItems) { + clearPictureListeners(t); + } + mItems.clear(); + notifyObservers(); + } + + private void clearPictureListeners(TabControl.Tab t) { + if (t.getWebView() != null) { + t.getWebView().setPictureListener(null); + if (t.getSubWebView() != null) { + t.getSubWebView().setPictureListener(null); + } + } + } + + /** + * Add a new window web page to the grid + * + * @param t The tab to display + */ + public void add(TabControl.Tab t) { + if (mMaxedOut) { + return; + } + mItems.add(t); + notifyObservers(); + if (mItems.size() == TabControl.MAX_TABS) { + mMaxedOut = true; + } + } + + /** + * Remove a window from the list. At this point, the window + * has already gone. It just needs to be removed from the screen + * + * @param index window to remove + */ + public void remove(int index) { + if (index >= 0 && index < mItems.size()) { + clearPictureListeners(mItems.remove(index)); + notifyObservers(); + mMaxedOut = false; + } + } + + /* (non-Javadoc) + * @see android.widget.ListAdapter#areAllItemsSelectable() + */ + public boolean areAllItemsEnabled() { + return true; + } + + /* (non-Javadoc) + * @see android.widget.ListAdapter#isSelectable(int) + */ + public boolean isEnabled(int position) { + if (position >= 0 && position <= mItems.size()) { + return true; + } + return false; + } + + /* (non-Javadoc) + * @see android.widget.Adapter#getCount() + */ + public int getCount() { + // Include the New Window button if we have not reached the tab limit + if (!mMaxedOut) { + return mItems.size()+1; + } + return mItems.size(); + } + + /* (non-Javadoc) + * @see android.widget.Adapter#getItem(int) + */ + public Object getItem(int position) { + if (!mMaxedOut) { + if (0 == position) { + return null; + } + return mItems.get(position); + } + return mItems.get(position); + } + + /* (non-Javadoc) + * @see android.widget.Adapter#getItemId(int) + */ + public long getItemId(int position) { + return position; + } + + /* (non-Javadoc) + * @see android.widget.Adapter#getView(int, android.view.View, + * android.view.ViewGroup) + */ + public View getView(int position, View convertView, ViewGroup parent) { + View v = null; + if (convertView != null) { + v = convertView; + } else { + LayoutInflater factory = LayoutInflater.from(mContext); + v = factory.inflate(R.layout.tabitem, null); + } + FakeWebView img = (FakeWebView) v.findViewById(R.id.icon); + ImageView close = (ImageView) v.findViewById(R.id.close); + TextView tv = (TextView) v.findViewById(R.id.label); + + // position needs to be in the range of Tab indices. + if (!mMaxedOut) { + position--; + } + + // Create the View for actual tabs + if (position != ImageGrid.NEW_TAB) { + TabControl.Tab t = mItems.get(position); + img.setTab(t); + tv.setText(t.getTitle()); + // Do not put the 'X' for a single tab or if the tab picker isn't + // "live" (meaning the user cannot click on a tab) + if (mItems.size() == 1 || !mIsLive) { + close.setVisibility(View.GONE); + } else { + close.setVisibility(View.VISIBLE); + final int pos = position; + close.setOnClickListener(new View.OnClickListener() { + public void onClick(View v) { + ImageAdapter.this.confirmClose(pos); + } + }); + } + } else { + img.setBackgroundColor(Color.BLACK); + img.setImageResource(R.drawable.ic_new_window); + img.setScaleType(ImageView.ScaleType.CENTER); + img.setPadding(0, 0, 0, 34); + tv.setText(R.string.new_window); + close.setVisibility(View.GONE); + } + if (mLandScape) { + ViewGroup.LayoutParams lp = img.getLayoutParams(); + lp.width = 225; + lp.height = 120; + img.requestLayout(); + } + return v; + } + + /* + * Pop a confirmation dialog to the user asking if they want to close this + * tab. + */ + private void confirmClose(final int position) { + final ImageGrid.Listener l = mImageGrid.getListener(); + if (l == null) { + return; + } + DialogInterface.OnClickListener confirm = + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, + int whichButton) { + l.remove(position); + } + }; + new AlertDialog.Builder(mContext) + .setTitle(R.string.close) + .setIcon(R.drawable.ssl_icon) + .setMessage(R.string.close_window) + .setPositiveButton(R.string.ok, confirm) + .setNegativeButton(R.string.cancel, null) + .show(); + } + + /* (non-Javadoc) + * @see android.widget.Adapter#registerDataSetObserver(android.database.DataSetObserver) + */ + public void registerDataSetObserver(DataSetObserver observer) { + mDataObservers.add(observer); + + } + + /* (non-Javadoc) + * @see android.widget.Adapter#hasStableIds() + */ + public boolean hasStableIds() { + return true; + } + + /* (non-Javadoc) + * @see android.widget.Adapter#unregisterDataSetObserver(android.database.DataSetObserver) + */ + public void unregisterDataSetObserver(DataSetObserver observer) { + mDataObservers.remove(observer); + + } + + /** + * Notify all the observers that a change has happened. + */ + void notifyObservers() { + for (DataSetObserver observer : mDataObservers) { + observer.onChanged(); + } + } + + public int getItemViewType(int position) { + return 0; + } + + public int getViewTypeCount() { + return 1; + } + + public boolean isEmpty() { + return getCount() == 0; + } +} |