зеркало из https://github.com/mozilla/gecko-dev.git
341 строка
14 KiB
Java
341 строка
14 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.AdapterView.OnItemClickListener;
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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 RelativeLayout implements GeckoEventListener {
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private Context mContext;
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private Animation mAnimation;
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private ListView mAutoCompleteList;
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private RelativeLayout mValidationMessage;
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private TextView mValidationMessageText;
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private static int sAutoCompleteMinWidth = 0;
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private static int sAutoCompleteRowHeight = 0;
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private static int sValidationMessageHeight = 0;
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// Minimum popup width for autocomplete messages
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private static final int AUTOCOMPLETE_MIN_WIDTH_IN_DPI = 200;
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// Height of the autocomplete_list_item TextView
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private static final int AUTOCOMPLETE_ROW_HEIGHT_IN_DPI = 32;
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// Height of the validation_message_text TextView, plus the top margin set to
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// make room for the arrow
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private static final int VALIDATION_MESSAGE_HEIGHT_IN_DPI = 58;
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private static final String LOGTAG = "FormAssistPopup";
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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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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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if (mAutoCompleteList == null) {
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LayoutInflater inflater = LayoutInflater.from(mContext);
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mAutoCompleteList = (ListView) inflater.inflate(R.layout.autocomplete_list, null);
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mAutoCompleteList.setOnItemClickListener(new OnItemClickListener() {
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public void onItemClick(AdapterView<?> parentView, View view, int position, long id) {
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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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addView(mAutoCompleteList);
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}
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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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mAutoCompleteList.setAdapter(adapter);
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positionAndShowPopup(rect, zoom, true);
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}
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private void showValidationMessage(String validationMessage, JSONArray rect, double zoom) {
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if (mValidationMessage == null) {
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LayoutInflater inflater = LayoutInflater.from(mContext);
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mValidationMessage = (RelativeLayout) inflater.inflate(R.layout.validation_message, null);
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addView(mValidationMessage);
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mValidationMessageText = (TextView) mValidationMessage.findViewById(R.id.validation_message_text);
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}
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validationMessage = "This is an incredibly long validation message to test the width of the popup.";
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mValidationMessageText.setText(validationMessage);
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// We need to set the text as selected for the marquee text to work.
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mValidationMessageText.setSelected(true);
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positionAndShowPopup(rect, zoom, false);
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}
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// Returns true if the popup is successfully shown, false otherwise
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private boolean positionAndShowPopup(JSONArray rect, double zoom, boolean isAutoComplete) {
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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(VISIBLE);
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startAnimation(mAnimation);
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}
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// Hide/show the appropriate popup contents
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if (mAutoCompleteList != null)
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mAutoCompleteList.setVisibility(isAutoComplete ? VISIBLE : GONE);
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if (mValidationMessage != null)
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mValidationMessage.setVisibility(isAutoComplete ? GONE : VISIBLE);
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// Initialize static variables based on DisplayMetrics. We delay this to
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// make sure DisplayMetrics isn't null to avoid an NPE.
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if (sAutoCompleteMinWidth == 0) {
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DisplayMetrics metrics = new DisplayMetrics();
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GeckoApp.mAppContext.getWindowManager().getDefaultDisplay().getMetrics(metrics);
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sAutoCompleteMinWidth = (int) (AUTOCOMPLETE_MIN_WIDTH_IN_DPI * metrics.density);
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sAutoCompleteRowHeight = (int) (AUTOCOMPLETE_ROW_HEIGHT_IN_DPI * metrics.density);
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sValidationMessageHeight = (int) (VALIDATION_MESSAGE_HEIGHT_IN_DPI * metrics.density);
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}
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// These values correspond to the input box for which we want to
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// display the FormAssistPopup.
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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 popupWidth = RelativeLayout.LayoutParams.FILL_PARENT;
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int popupLeft = left < 0 ? 0 : left;
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FloatSize viewport = GeckoApp.mAppContext.getLayerController().getViewportSize();
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// For autocomplete suggestions, if the input is smaller than the screen-width,
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// shrink the popup's width. Otherwise, keep it as FILL_PARENT.
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if (isAutoComplete && (left + width) < viewport.width) {
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popupWidth = left < 0 ? left + width : width;
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// Ensure the popup has a minimum width.
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if (popupWidth < sAutoCompleteMinWidth) {
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popupWidth = sAutoCompleteMinWidth;
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// Move the popup to the left if there isn't enough room for it.
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if ((popupLeft + popupWidth) > viewport.width)
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popupLeft = (int) (viewport.width - popupWidth);
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}
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}
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int popupHeight;
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if (isAutoComplete)
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popupHeight = sAutoCompleteRowHeight * mAutoCompleteList.getAdapter().getCount();
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else
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popupHeight = sValidationMessageHeight;
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int popupTop = top + height;
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// If the popup doesn't fit below the input box, shrink its height, or
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// see if we can place it above the input instead.
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if ((popupTop + popupHeight) > viewport.height) {
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// Find where the maximum space is, and put the popup there.
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if ((viewport.height - popupTop) > top) {
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// Shrink the height to fit it below the input box.
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popupHeight = (int) (viewport.height - popupTop);
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} else {
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if (popupHeight < top) {
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// No shrinking needed to fit on top.
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popupTop = (top - popupHeight);
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} else {
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// Shrink to available space on top.
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popupTop = 0;
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popupHeight = top;
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}
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}
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}
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RelativeLayout.LayoutParams layoutParams =
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new RelativeLayout.LayoutParams(popupWidth, popupHeight);
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layoutParams.setMargins(popupLeft, popupTop, 0, 0);
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setLayoutParams(layoutParams);
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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(GONE);
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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 = suggestions.getJSONObject(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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