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314 lines
12 KiB
Java
314 lines
12 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Margaret Leibovic <margaret.leibovic@gmail.com>
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* Sriram Ramasubramanian <sriram@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko;
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import org.mozilla.gecko.gfx.FloatSize;
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import android.content.Context;
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import android.util.Log;
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import android.util.AttributeSet;
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import android.util.DisplayMetrics;
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import android.util.Pair;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.animation.Animation;
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import android.view.animation.AnimationUtils;
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import android.view.inputmethod.InputMethodManager;
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import android.widget.ArrayAdapter;
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import android.widget.AdapterView;
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import android.widget.RelativeLayout;
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import android.widget.ListView;
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import android.widget.TextView;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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public class FormAssistPopup extends ListView implements GeckoEventListener {
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private Context mContext;
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private RelativeLayout.LayoutParams mLayout;
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private int mWidth;
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private int mHeight;
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private Animation mAnimation;
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private static final String LOGTAG = "FormAssistPopup";
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private static int sMinWidth = 0;
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private static int sRowHeight = 0;
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private static final int POPUP_MIN_WIDTH_IN_DPI = 200;
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private static final int POPUP_ROW_HEIGHT_IN_DPI = 32;
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private static enum PopupType { NONE, AUTOCOMPLETE, VALIDATION };
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// Keep track of the type of popup we're currently showing
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private PopupType mTypeShowing = PopupType.NONE;
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public FormAssistPopup(Context context, AttributeSet attrs) {
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super(context, attrs);
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mContext = context;
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mAnimation = AnimationUtils.loadAnimation(context, R.anim.grow_fade_in);
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mAnimation.setDuration(75);
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setFocusable(false);
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setOnItemClickListener(new OnItemClickListener() {
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public void onItemClick(AdapterView<?> parentView, View view, int position, long id) {
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if (mTypeShowing.equals(PopupType.AUTOCOMPLETE)) {
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// Use the value stored with the autocomplete view, not the label text,
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// since they can be different.
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TextView textView = (TextView) view;
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String value = (String) textView.getTag();
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("FormAssist:AutoComplete", value));
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hide();
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}
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}
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});
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GeckoAppShell.registerGeckoEventListener("FormAssist:AutoComplete", this);
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GeckoAppShell.registerGeckoEventListener("FormAssist:ValidationMessage", this);
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GeckoAppShell.registerGeckoEventListener("FormAssist:Hide", this);
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}
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public void handleMessage(String event, JSONObject message) {
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try {
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if (event.equals("FormAssist:AutoComplete")) {
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handleAutoCompleteMessage(message);
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} else if (event.equals("FormAssist:ValidationMessage")) {
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handleValidationMessage(message);
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} else if (event.equals("FormAssist:Hide")) {
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handleHideMessage(message);
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}
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} catch (Exception e) {
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Log.e(LOGTAG, "Exception handling message \"" + event + "\":", e);
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}
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}
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private void handleAutoCompleteMessage(JSONObject message) throws JSONException {
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final JSONArray suggestions = message.getJSONArray("suggestions");
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final JSONArray rect = message.getJSONArray("rect");
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final double zoom = message.getDouble("zoom");
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GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
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public void run() {
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showAutoCompleteSuggestions(suggestions, rect, zoom);
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}
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});
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}
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private void handleValidationMessage(JSONObject message) throws JSONException {
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final String validationMessage = message.getString("validationMessage");
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final JSONArray rect = message.getJSONArray("rect");
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final double zoom = message.getDouble("zoom");
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GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
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public void run() {
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showValidationMessage(validationMessage, rect, zoom);
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}
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});
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}
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private void handleHideMessage(JSONObject message) {
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GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
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public void run() {
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hide();
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}
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});
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}
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private void showAutoCompleteSuggestions(JSONArray suggestions, JSONArray rect, double zoom) {
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AutoCompleteListAdapter adapter = new AutoCompleteListAdapter(mContext, R.layout.autocomplete_list_item);
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adapter.populateSuggestionsList(suggestions);
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setAdapter(adapter);
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if (positionAndShowPopup(rect, zoom))
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mTypeShowing = PopupType.AUTOCOMPLETE;
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}
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// TODO: style the validation message popup differently (bug 731654)
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private void showValidationMessage(String validationMessage, JSONArray rect, double zoom) {
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ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext, R.layout.autocomplete_list_item);
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adapter.add(validationMessage);
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setAdapter(adapter);
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if (positionAndShowPopup(rect, zoom))
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mTypeShowing = PopupType.VALIDATION;
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}
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// Returns true if the popup is successfully shown, false otherwise
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public boolean positionAndShowPopup(JSONArray rect, double zoom) {
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// Don't show the form assist popup when using fullscreen VKB
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InputMethodManager imm =
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(InputMethodManager) GeckoApp.mAppContext.getSystemService(Context.INPUT_METHOD_SERVICE);
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if (imm.isFullscreenMode())
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return false;
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if (!isShown()) {
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setVisibility(View.VISIBLE);
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startAnimation(mAnimation);
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}
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if (mLayout == null) {
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mLayout = (RelativeLayout.LayoutParams) getLayoutParams();
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mWidth = mLayout.width;
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mHeight = mLayout.height;
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}
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int left = 0;
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int top = 0;
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int width = 0;
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int height = 0;
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try {
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left = (int) (rect.getDouble(0) * zoom);
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top = (int) (rect.getDouble(1) * zoom);
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width = (int) (rect.getDouble(2) * zoom);
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height = (int) (rect.getDouble(3) * zoom);
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} catch (JSONException e) { }
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int listWidth = mWidth;
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int listHeight = mHeight;
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int listLeft = left < 0 ? 0 : left;
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int listTop = top + height;
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FloatSize viewport = GeckoApp.mAppContext.getLayerController().getViewportSize();
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// Late initializing variable to allow DisplayMetrics not to be null and avoid NPE
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if (sMinWidth == 0) {
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DisplayMetrics metrics = new DisplayMetrics();
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GeckoApp.mAppContext.getWindowManager().getDefaultDisplay().getMetrics(metrics);
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sMinWidth = (int) (POPUP_MIN_WIDTH_IN_DPI * metrics.density);
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sRowHeight = (int) (POPUP_ROW_HEIGHT_IN_DPI * metrics.density);
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}
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// If the textbox is smaller than the screen-width,
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// shrink the list's width
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if ((left + width) < viewport.width)
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listWidth = left < 0 ? left + width : width;
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// listWidth can be negative if it is a constant - FILL_PARENT or MATCH_PARENT
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if (listWidth >= 0 && listWidth < sMinWidth) {
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listWidth = sMinWidth;
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if ((listLeft + listWidth) > viewport.width)
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listLeft = (int) (viewport.width - listWidth);
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}
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listHeight = sRowHeight * getAdapter().getCount();
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// The text box doesnt fit below
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if ((listTop + listHeight) > viewport.height) {
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// Find where the maximum space is, and fit it there
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if ((viewport.height - listTop) > top) {
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// Shrink the height to fit it below the text-box
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listHeight = (int) (viewport.height - listTop);
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} else {
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if (listHeight < top) {
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// No shrinking needed to fit on top
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listTop = (top - listHeight);
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} else {
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// Shrink to available space on top
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listTop = 0;
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listHeight = top;
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}
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}
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}
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mLayout = new RelativeLayout.LayoutParams(listWidth, listHeight);
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mLayout.setMargins(listLeft, listTop, 0, 0);
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setLayoutParams(mLayout);
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requestLayout();
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return true;
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}
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public void hide() {
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if (isShown()) {
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setVisibility(View.GONE);
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mTypeShowing = PopupType.NONE;
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("FormAssist:Hidden", null));
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}
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}
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private class AutoCompleteListAdapter extends ArrayAdapter<Pair<String, String>> {
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private LayoutInflater mInflater;
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private int mTextViewResourceId;
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public AutoCompleteListAdapter(Context context, int textViewResourceId) {
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super(context, textViewResourceId);
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mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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mTextViewResourceId = textViewResourceId;
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}
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// This method takes an array of autocomplete suggestions with label/value properties
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// and adds label/value Pair objects to the array that backs the adapter.
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public void populateSuggestionsList(JSONArray suggestions) {
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try {
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for (int i = 0; i < suggestions.length(); i++) {
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JSONObject suggestion = (JSONObject) suggestions.get(i);
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String label = suggestion.getString("label");
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String value = suggestion.getString("value");
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add(new Pair<String, String>(label, value));
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}
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} catch (JSONException e) {
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Log.e(LOGTAG, "JSONException: " + e);
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}
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}
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@Override
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public View getView(int position, View convertView, ViewGroup parent) {
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if (convertView == null)
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convertView = mInflater.inflate(mTextViewResourceId, null);
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Pair<String, String> item = getItem(position);
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TextView itemView = (TextView) convertView;
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// Set the text with the suggestion label
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itemView.setText(item.first);
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// Set a tag with the suggestion value
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itemView.setTag(item.second);
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return convertView;
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}
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}
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}
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