diff options
Diffstat (limited to 'libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/SuggestionsAdapter.java')
| -rw-r--r-- | libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/SuggestionsAdapter.java | 758 |
1 files changed, 0 insertions, 758 deletions
diff --git a/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/SuggestionsAdapter.java b/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/SuggestionsAdapter.java deleted file mode 100644 index 82d4f0c42..000000000 --- a/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/SuggestionsAdapter.java +++ /dev/null @@ -1,758 +0,0 @@ -/* - * 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.actionbarsherlock.widget; - -import android.app.SearchManager; -import android.app.SearchableInfo; -import android.content.ComponentName; -import android.content.ContentResolver; -import android.content.Context; -import android.content.pm.ActivityInfo; -import android.content.pm.PackageManager; -import android.content.pm.PackageManager.NameNotFoundException; -import android.content.res.ColorStateList; -import android.content.res.Resources; -import android.database.Cursor; -import android.graphics.drawable.Drawable; -import android.net.Uri; -import android.os.Bundle; -import android.support.v4.widget.ResourceCursorAdapter; -import android.text.Spannable; -import android.text.SpannableString; -import android.text.TextUtils; -import android.text.style.TextAppearanceSpan; -import android.util.Log; -import android.util.TypedValue; -import android.view.View; -import android.view.View.OnClickListener; -import android.view.ViewGroup; -import android.widget.ImageView; -import android.widget.TextView; -import com.actionbarsherlock.R; - -import java.io.FileNotFoundException; -import java.io.IOException; -import java.io.InputStream; -import java.util.List; -import java.util.WeakHashMap; - -/** - * Provides the contents for the suggestion drop-down list. - * - * @hide - */ -class SuggestionsAdapter extends ResourceCursorAdapter implements OnClickListener { - - private static final boolean DBG = false; - private static final String LOG_TAG = "SuggestionsAdapter"; - private static final int QUERY_LIMIT = 50; - - static final int REFINE_NONE = 0; - static final int REFINE_BY_ENTRY = 1; - static final int REFINE_ALL = 2; - - private SearchManager mSearchManager; - private SearchableInfo mSearchable; - private SearchView mSearchView; - private Context mProviderContext; - private WeakHashMap<String, Drawable.ConstantState> mOutsideDrawablesCache; - private boolean mClosed = false; - private int mQueryRefinement = REFINE_BY_ENTRY; - - // URL color - private ColorStateList mUrlColor; - - static final int INVALID_INDEX = -1; - - // Cached column indexes, updated when the cursor changes. - private int mText1Col = INVALID_INDEX; - private int mText2Col = INVALID_INDEX; - private int mText2UrlCol = INVALID_INDEX; - private int mIconName1Col = INVALID_INDEX; - private int mIconName2Col = INVALID_INDEX; - private int mFlagsCol = INVALID_INDEX; - - // private final Runnable mStartSpinnerRunnable; - // private final Runnable mStopSpinnerRunnable; - - /** - * The amount of time we delay in the filter when the user presses the delete key. - */ - //private static final long DELETE_KEY_POST_DELAY = 500L; - - public SuggestionsAdapter(Context context, SearchView searchView, - SearchableInfo searchable, WeakHashMap<String, Drawable.ConstantState> outsideDrawablesCache) { - super(context, - R.layout.abs__search_dropdown_item_icons_2line, - null, // no initial cursor - true); // auto-requery - mSearchManager = (SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE); - mSearchable = searchable; - mProviderContext = mContext; - mSearchView = searchView; - - mOutsideDrawablesCache = outsideDrawablesCache; - - // mStartSpinnerRunnable = new Runnable() { - // public void run() { - // // mSearchView.setWorking(true); // TODO: - // } - // }; - // - // mStopSpinnerRunnable = new Runnable() { - // public void run() { - // // mSearchView.setWorking(false); // TODO: - // } - // }; - - // delay 500ms when deleting -// TODO getFilter().setDelayer(new Filter.Delayer() { -// -// private int mPreviousLength = 0; -// -// public long getPostingDelay(CharSequence constraint) { -// if (constraint == null) return 0; -// -// long delay = constraint.length() < mPreviousLength ? DELETE_KEY_POST_DELAY : 0; -// mPreviousLength = constraint.length(); -// return delay; -// } -// }); - } - - /** - * Enables query refinement for all suggestions. This means that an additional icon - * will be shown for each entry. When clicked, the suggested text on that line will be - * copied to the query text field. - * <p> - * - * @param refineWhat which queries to refine. Possible values are {@link #REFINE_NONE}, - * {@link #REFINE_BY_ENTRY}, and {@link #REFINE_ALL}. - */ - public void setQueryRefinement(int refineWhat) { - mQueryRefinement = refineWhat; - } - - /** - * Returns the current query refinement preference. - * @return value of query refinement preference - */ - public int getQueryRefinement() { - return mQueryRefinement; - } - - /** - * Overridden to always return <code>false</code>, since we cannot be sure that - * suggestion sources return stable IDs. - */ - @Override - public boolean hasStableIds() { - return false; - } - - /** - * Use the search suggestions provider to obtain a live cursor. This will be called - * in a worker thread, so it's OK if the query is slow (e.g. round trip for suggestions). - * The results will be processed in the UI thread and changeCursor() will be called. - */ - @Override - public Cursor runQueryOnBackgroundThread(CharSequence constraint) { - if (DBG) Log.d(LOG_TAG, "runQueryOnBackgroundThread(" + constraint + ")"); - String query = (constraint == null) ? "" : constraint.toString(); - /** - * for in app search we show the progress spinner until the cursor is returned with - * the results. - */ - Cursor cursor = null; - if (mSearchView.getVisibility() != View.VISIBLE - || mSearchView.getWindowVisibility() != View.VISIBLE) { - return null; - } - //mSearchView.getWindow().getDecorView().post(mStartSpinnerRunnable); // TODO: - try { - cursor = getSuggestions(query, QUERY_LIMIT); - // trigger fill window so the spinner stays up until the results are copied over and - // closer to being ready - if (cursor != null) { - cursor.getCount(); - return cursor; - } - } catch (RuntimeException e) { - Log.w(LOG_TAG, "Search suggestions query threw an exception.", e); - } - // If cursor is null or an exception was thrown, stop the spinner and return null. - // changeCursor doesn't get called if cursor is null - // mSearchView.getWindow().getDecorView().post(mStopSpinnerRunnable); // TODO: - return null; - } - - public Cursor getSuggestions(String query, int limit) { - if (mSearchable == null) { - return null; - } - - String authority = mSearchable.getSuggestAuthority(); - if (authority == null) { - return null; - } - - Uri.Builder uriBuilder = new Uri.Builder() - .scheme(ContentResolver.SCHEME_CONTENT) - .authority(authority) - .query("") // TODO: Remove, workaround for a bug in Uri.writeToParcel() - .fragment(""); // TODO: Remove, workaround for a bug in Uri.writeToParcel() - - // if content path provided, insert it now - final String contentPath = mSearchable.getSuggestPath(); - if (contentPath != null) { - uriBuilder.appendEncodedPath(contentPath); - } - - // append standard suggestion query path - uriBuilder.appendPath(SearchManager.SUGGEST_URI_PATH_QUERY); - - // get the query selection, may be null - String selection = mSearchable.getSuggestSelection(); - // inject query, either as selection args or inline - String[] selArgs = null; - if (selection != null) { // use selection if provided - selArgs = new String[] { query }; - } else { // no selection, use REST pattern - uriBuilder.appendPath(query); - } - - if (limit > 0) { - uriBuilder.appendQueryParameter("limit", String.valueOf(limit)); - } - - Uri uri = uriBuilder.build(); - - // finally, make the query - return mContext.getContentResolver().query(uri, null, selection, selArgs, null); - } - - public void close() { - if (DBG) Log.d(LOG_TAG, "close()"); - changeCursor(null); - mClosed = true; - } - - @Override - public void notifyDataSetChanged() { - if (DBG) Log.d(LOG_TAG, "notifyDataSetChanged"); - super.notifyDataSetChanged(); - - // mSearchView.onDataSetChanged(); // TODO: - - updateSpinnerState(getCursor()); - } - - @Override - public void notifyDataSetInvalidated() { - if (DBG) Log.d(LOG_TAG, "notifyDataSetInvalidated"); - super.notifyDataSetInvalidated(); - - updateSpinnerState(getCursor()); - } - - private void updateSpinnerState(Cursor cursor) { - Bundle extras = cursor != null ? cursor.getExtras() : null; - if (DBG) { - Log.d(LOG_TAG, "updateSpinnerState - extra = " - + (extras != null - ? extras.getBoolean(SearchManager.CURSOR_EXTRA_KEY_IN_PROGRESS) - : null)); - } - // Check if the Cursor indicates that the query is not complete and show the spinner - if (extras != null - && extras.getBoolean(SearchManager.CURSOR_EXTRA_KEY_IN_PROGRESS)) { - // mSearchView.getWindow().getDecorView().post(mStartSpinnerRunnable); // TODO: - return; - } - // If cursor is null or is done, stop the spinner - // mSearchView.getWindow().getDecorView().post(mStopSpinnerRunnable); // TODO: - } - - /** - * Cache columns. - */ - @Override - public void changeCursor(Cursor c) { - if (DBG) Log.d(LOG_TAG, "changeCursor(" + c + ")"); - - if (mClosed) { - Log.w(LOG_TAG, "Tried to change cursor after adapter was closed."); - if (c != null) c.close(); - return; - } - - try { - super.changeCursor(c); - - if (c != null) { - mText1Col = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1); - mText2Col = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_2); - mText2UrlCol = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_2_URL); - mIconName1Col = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_ICON_1); - mIconName2Col = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_ICON_2); - mFlagsCol = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_FLAGS); - } - } catch (Exception e) { - Log.e(LOG_TAG, "error changing cursor and caching columns", e); - } - } - - /** - * Tags the view with cached child view look-ups. - */ - @Override - public View newView(Context context, Cursor cursor, ViewGroup parent) { - View v = super.newView(context, cursor, parent); - v.setTag(new ChildViewCache(v)); - return v; - } - - /** - * Cache of the child views of drop-drown list items, to avoid looking up the children - * each time the contents of a list item are changed. - */ - private final static class ChildViewCache { - public final TextView mText1; - public final TextView mText2; - public final ImageView mIcon1; - public final ImageView mIcon2; - public final ImageView mIconRefine; - - public ChildViewCache(View v) { - mText1 = (TextView) v.findViewById(android.R.id.text1); - mText2 = (TextView) v.findViewById(android.R.id.text2); - mIcon1 = (ImageView) v.findViewById(android.R.id.icon1); - mIcon2 = (ImageView) v.findViewById(android.R.id.icon2); - mIconRefine = (ImageView) v.findViewById(R.id.edit_query); - } - } - - @Override - public void bindView(View view, Context context, Cursor cursor) { - ChildViewCache views = (ChildViewCache) view.getTag(); - - int flags = 0; - if (mFlagsCol != INVALID_INDEX) { - flags = cursor.getInt(mFlagsCol); - } - if (views.mText1 != null) { - String text1 = getStringOrNull(cursor, mText1Col); - setViewText(views.mText1, text1); - } - if (views.mText2 != null) { - // First check TEXT_2_URL - CharSequence text2 = getStringOrNull(cursor, mText2UrlCol); - if (text2 != null) { - text2 = formatUrl(text2); - } else { - text2 = getStringOrNull(cursor, mText2Col); - } - - // If no second line of text is indicated, allow the first line of text - // to be up to two lines if it wants to be. - if (TextUtils.isEmpty(text2)) { - if (views.mText1 != null) { - views.mText1.setSingleLine(false); - views.mText1.setMaxLines(2); - } - } else { - if (views.mText1 != null) { - views.mText1.setSingleLine(true); - views.mText1.setMaxLines(1); - } - } - setViewText(views.mText2, text2); - } - - if (views.mIcon1 != null) { - setViewDrawable(views.mIcon1, getIcon1(cursor), View.INVISIBLE); - } - if (views.mIcon2 != null) { - setViewDrawable(views.mIcon2, getIcon2(cursor), View.GONE); - } - if (mQueryRefinement == REFINE_ALL - || (mQueryRefinement == REFINE_BY_ENTRY - && (flags & SearchManager.FLAG_QUERY_REFINEMENT) != 0)) { - views.mIconRefine.setVisibility(View.VISIBLE); - views.mIconRefine.setTag(views.mText1.getText()); - views.mIconRefine.setOnClickListener(this); - } else { - views.mIconRefine.setVisibility(View.GONE); - } - } - - public void onClick(View v) { - Object tag = v.getTag(); - if (tag instanceof CharSequence) { - mSearchView.onQueryRefine((CharSequence) tag); - } - } - - private CharSequence formatUrl(CharSequence url) { - if (mUrlColor == null) { - // Lazily get the URL color from the current theme. - TypedValue colorValue = new TypedValue(); - mContext.getTheme().resolveAttribute(R.attr.textColorSearchUrl, colorValue, true); - mUrlColor = mContext.getResources().getColorStateList(colorValue.resourceId); - } - - SpannableString text = new SpannableString(url); - text.setSpan(new TextAppearanceSpan(null, 0, 0, mUrlColor, null), - 0, url.length(), - Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); - return text; - } - - private void setViewText(TextView v, CharSequence text) { - // Set the text even if it's null, since we need to clear any previous text. - v.setText(text); - - if (TextUtils.isEmpty(text)) { - v.setVisibility(View.GONE); - } else { - v.setVisibility(View.VISIBLE); - } - } - - private Drawable getIcon1(Cursor cursor) { - if (mIconName1Col == INVALID_INDEX) { - return null; - } - String value = cursor.getString(mIconName1Col); - Drawable drawable = getDrawableFromResourceValue(value); - if (drawable != null) { - return drawable; - } - return getDefaultIcon1(cursor); - } - - private Drawable getIcon2(Cursor cursor) { - if (mIconName2Col == INVALID_INDEX) { - return null; - } - String value = cursor.getString(mIconName2Col); - return getDrawableFromResourceValue(value); - } - - /** - * Sets the drawable in an image view, makes sure the view is only visible if there - * is a drawable. - */ - private void setViewDrawable(ImageView v, Drawable drawable, int nullVisibility) { - // Set the icon even if the drawable is null, since we need to clear any - // previous icon. - v.setImageDrawable(drawable); - - if (drawable == null) { - v.setVisibility(nullVisibility); - } else { - v.setVisibility(View.VISIBLE); - - // This is a hack to get any animated drawables (like a 'working' spinner) - // to animate. You have to setVisible true on an AnimationDrawable to get - // it to start animating, but it must first have been false or else the - // call to setVisible will be ineffective. We need to clear up the story - // about animated drawables in the future, see http://b/1878430. - drawable.setVisible(false, false); - drawable.setVisible(true, false); - } - } - - /** - * Gets the text to show in the query field when a suggestion is selected. - * - * @param cursor The Cursor to read the suggestion data from. The Cursor should already - * be moved to the suggestion that is to be read from. - * @return The text to show, or <code>null</code> if the query should not be - * changed when selecting this suggestion. - */ - @Override - public CharSequence convertToString(Cursor cursor) { - if (cursor == null) { - return null; - } - - String query = getColumnString(cursor, SearchManager.SUGGEST_COLUMN_QUERY); - if (query != null) { - return query; - } - - return null; - } - - /** - * This method is overridden purely to provide a bit of protection against - * flaky content providers. - * - * @see android.widget.ListAdapter#getView(int, View, ViewGroup) - */ - @Override - public View getView(int position, View convertView, ViewGroup parent) { - try { - return super.getView(position, convertView, parent); - } catch (RuntimeException e) { - Log.w(LOG_TAG, "Search suggestions cursor threw exception.", e); - // Put exception string in item title - View v = newView(mContext, mCursor, parent); - if (v != null) { - ChildViewCache views = (ChildViewCache) v.getTag(); - TextView tv = views.mText1; - tv.setText(e.toString()); - } - return v; - } - } - - /** - * Gets a drawable given a value provided by a suggestion provider. - * - * This value could be just the string value of a resource id - * (e.g., "2130837524"), in which case we will try to retrieve a drawable from - * the provider's resources. If the value is not an integer, it is - * treated as a Uri and opened with - * {@link ContentResolver#openOutputStream(android.net.Uri, String)}. - * - * All resources and URIs are read using the suggestion provider's context. - * - * If the string is not formatted as expected, or no drawable can be found for - * the provided value, this method returns null. - * - * @param drawableId a string like "2130837524", - * "android.resource://com.android.alarmclock/2130837524", - * or "content://contacts/photos/253". - * @return a Drawable, or null if none found - */ - private Drawable getDrawableFromResourceValue(String drawableId) { - if (drawableId == null || drawableId.length() == 0 || "0".equals(drawableId)) { - return null; - } - try { - // First, see if it's just an integer - int resourceId = Integer.parseInt(drawableId); - // It's an int, look for it in the cache - String drawableUri = ContentResolver.SCHEME_ANDROID_RESOURCE - + "://" + mProviderContext.getPackageName() + "/" + resourceId; - // Must use URI as cache key, since ints are app-specific - Drawable drawable = checkIconCache(drawableUri); - if (drawable != null) { - return drawable; - } - // Not cached, find it by resource ID - drawable = mProviderContext.getResources().getDrawable(resourceId); - // Stick it in the cache, using the URI as key - storeInIconCache(drawableUri, drawable); - return drawable; - } catch (NumberFormatException nfe) { - // It's not an integer, use it as a URI - Drawable drawable = checkIconCache(drawableId); - if (drawable != null) { - return drawable; - } - Uri uri = Uri.parse(drawableId); - drawable = getDrawable(uri); - storeInIconCache(drawableId, drawable); - return drawable; - } catch (Resources.NotFoundException nfe) { - // It was an integer, but it couldn't be found, bail out - Log.w(LOG_TAG, "Icon resource not found: " + drawableId); - return null; - } - } - - /** - * Gets a drawable by URI, without using the cache. - * - * @return A drawable, or {@code null} if the drawable could not be loaded. - */ - private Drawable getDrawable(Uri uri) { - try { - String scheme = uri.getScheme(); - if (ContentResolver.SCHEME_ANDROID_RESOURCE.equals(scheme)) { - // Load drawables through Resources, to get the source density information - try { - return getTheDrawable(uri); - } catch (Resources.NotFoundException ex) { - throw new FileNotFoundException("Resource does not exist: " + uri); - } - } else { - // Let the ContentResolver handle content and file URIs. - InputStream stream = mProviderContext.getContentResolver().openInputStream(uri); - if (stream == null) { - throw new FileNotFoundException("Failed to open " + uri); - } - try { - return Drawable.createFromStream(stream, null); - } finally { - try { - stream.close(); - } catch (IOException ex) { - Log.e(LOG_TAG, "Error closing icon stream for " + uri, ex); - } - } - } - } catch (FileNotFoundException fnfe) { - Log.w(LOG_TAG, "Icon not found: " + uri + ", " + fnfe.getMessage()); - return null; - } - } - - public Drawable getTheDrawable(Uri uri) throws FileNotFoundException { - String authority = uri.getAuthority(); - Resources r; - if (TextUtils.isEmpty(authority)) { - throw new FileNotFoundException("No authority: " + uri); - } else { - try { - r = mContext.getPackageManager().getResourcesForApplication(authority); - } catch (NameNotFoundException ex) { - throw new FileNotFoundException("No package found for authority: " + uri); - } - } - List<String> path = uri.getPathSegments(); - if (path == null) { - throw new FileNotFoundException("No path: " + uri); - } - int len = path.size(); - int id; - if (len == 1) { - try { - id = Integer.parseInt(path.get(0)); - } catch (NumberFormatException e) { - throw new FileNotFoundException("Single path segment is not a resource ID: " + uri); - } - } else if (len == 2) { - id = r.getIdentifier(path.get(1), path.get(0), authority); - } else { - throw new FileNotFoundException("More than two path segments: " + uri); - } - if (id == 0) { - throw new FileNotFoundException("No resource found for: " + uri); - } - return r.getDrawable(id); - } - - private Drawable checkIconCache(String resourceUri) { - Drawable.ConstantState cached = mOutsideDrawablesCache.get(resourceUri); - if (cached == null) { - return null; - } - if (DBG) Log.d(LOG_TAG, "Found icon in cache: " + resourceUri); - return cached.newDrawable(); - } - - private void storeInIconCache(String resourceUri, Drawable drawable) { - if (drawable != null) { - mOutsideDrawablesCache.put(resourceUri, drawable.getConstantState()); - } - } - - /** - * Gets the left-hand side icon that will be used for the current suggestion - * if the suggestion contains an icon column but no icon or a broken icon. - * - * @param cursor A cursor positioned at the current suggestion. - * @return A non-null drawable. - */ - private Drawable getDefaultIcon1(Cursor cursor) { - // Fall back to a default icon - return mContext.getPackageManager().getDefaultActivityIcon(); - } - - /** - * Gets the activity or application icon for an activity. - * Uses the local icon cache for fast repeated lookups. - * - * @param component Name of an activity. - * @return A drawable, or {@code null} if neither the activity nor the application - * has an icon set. - */ - private Drawable getActivityIconWithCache(ComponentName component) { - // First check the icon cache - String componentIconKey = component.flattenToShortString(); - // Using containsKey() since we also store null values. - if (mOutsideDrawablesCache.containsKey(componentIconKey)) { - Drawable.ConstantState cached = mOutsideDrawablesCache.get(componentIconKey); - return cached == null ? null : cached.newDrawable(mProviderContext.getResources()); - } - // Then try the activity or application icon - Drawable drawable = getActivityIcon(component); - // Stick it in the cache so we don't do this lookup again. - Drawable.ConstantState toCache = drawable == null ? null : drawable.getConstantState(); - mOutsideDrawablesCache.put(componentIconKey, toCache); - return drawable; - } - - /** - * Gets the activity or application icon for an activity. - * - * @param component Name of an activity. - * @return A drawable, or {@code null} if neither the acitivy or the application - * have an icon set. - */ - private Drawable getActivityIcon(ComponentName component) { - PackageManager pm = mContext.getPackageManager(); - final ActivityInfo activityInfo; - try { - activityInfo = pm.getActivityInfo(component, PackageManager.GET_META_DATA); - } catch (NameNotFoundException ex) { - Log.w(LOG_TAG, ex.toString()); - return null; - } - int iconId = activityInfo.getIconResource(); - if (iconId == 0) return null; - String pkg = component.getPackageName(); - Drawable drawable = pm.getDrawable(pkg, iconId, activityInfo.applicationInfo); - if (drawable == null) { - Log.w(LOG_TAG, "Invalid icon resource " + iconId + " for " - + component.flattenToShortString()); - return null; - } - return drawable; - } - - /** - * Gets the value of a string column by name. - * - * @param cursor Cursor to read the value from. - * @param columnName The name of the column to read. - * @return The value of the given column, or <code>null</null> - * if the cursor does not contain the given column. - */ - public static String getColumnString(Cursor cursor, String columnName) { - int col = cursor.getColumnIndex(columnName); - return getStringOrNull(cursor, col); - } - - private static String getStringOrNull(Cursor cursor, int col) { - if (col == INVALID_INDEX) { - return null; - } - try { - return cursor.getString(col); - } catch (Exception e) { - Log.e(LOG_TAG, - "unexpected error retrieving valid column from cursor, " - + "did the remote process die?", e); - return null; - } - } -} |