gecko/mobile/android/base/FormAssistPopup.java

341 lines
14 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Margaret Leibovic <margaret.leibovic@gmail.com>
* Sriram Ramasubramanian <sriram@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko;
import org.mozilla.gecko.gfx.FloatSize;
import android.content.Context;
import android.util.Log;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Pair;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.AdapterView;
import android.widget.RelativeLayout;
import android.widget.ListView;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class FormAssistPopup extends RelativeLayout implements GeckoEventListener {
private Context mContext;
private Animation mAnimation;
private ListView mAutoCompleteList;
private RelativeLayout mValidationMessage;
private TextView mValidationMessageText;
private static int sAutoCompleteMinWidth = 0;
private static int sAutoCompleteRowHeight = 0;
private static int sValidationMessageHeight = 0;
// Minimum popup width for autocomplete messages
private static final int AUTOCOMPLETE_MIN_WIDTH_IN_DPI = 200;
// Height of the autocomplete_list_item TextView
private static final int AUTOCOMPLETE_ROW_HEIGHT_IN_DPI = 32;
// Height of the validation_message_text TextView, plus the top margin set to
// make room for the arrow
private static final int VALIDATION_MESSAGE_HEIGHT_IN_DPI = 58;
private static final String LOGTAG = "FormAssistPopup";
public FormAssistPopup(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mAnimation = AnimationUtils.loadAnimation(context, R.anim.grow_fade_in);
mAnimation.setDuration(75);
setFocusable(false);
GeckoAppShell.registerGeckoEventListener("FormAssist:AutoComplete", this);
GeckoAppShell.registerGeckoEventListener("FormAssist:ValidationMessage", this);
GeckoAppShell.registerGeckoEventListener("FormAssist:Hide", this);
}
public void handleMessage(String event, JSONObject message) {
try {
if (event.equals("FormAssist:AutoComplete")) {
handleAutoCompleteMessage(message);
} else if (event.equals("FormAssist:ValidationMessage")) {
handleValidationMessage(message);
} else if (event.equals("FormAssist:Hide")) {
handleHideMessage(message);
}
} catch (Exception e) {
Log.e(LOGTAG, "Exception handling message \"" + event + "\":", e);
}
}
private void handleAutoCompleteMessage(JSONObject message) throws JSONException {
final JSONArray suggestions = message.getJSONArray("suggestions");
final JSONArray rect = message.getJSONArray("rect");
final double zoom = message.getDouble("zoom");
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
showAutoCompleteSuggestions(suggestions, rect, zoom);
}
});
}
private void handleValidationMessage(JSONObject message) throws JSONException {
final String validationMessage = message.getString("validationMessage");
final JSONArray rect = message.getJSONArray("rect");
final double zoom = message.getDouble("zoom");
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
showValidationMessage(validationMessage, rect, zoom);
}
});
}
private void handleHideMessage(JSONObject message) {
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
hide();
}
});
}
private void showAutoCompleteSuggestions(JSONArray suggestions, JSONArray rect, double zoom) {
if (mAutoCompleteList == null) {
LayoutInflater inflater = LayoutInflater.from(mContext);
mAutoCompleteList = (ListView) inflater.inflate(R.layout.autocomplete_list, null);
mAutoCompleteList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parentView, View view, int position, long id) {
// Use the value stored with the autocomplete view, not the label text,
// since they can be different.
TextView textView = (TextView) view;
String value = (String) textView.getTag();
GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("FormAssist:AutoComplete", value));
hide();
}
});
addView(mAutoCompleteList);
}
AutoCompleteListAdapter adapter = new AutoCompleteListAdapter(mContext, R.layout.autocomplete_list_item);
adapter.populateSuggestionsList(suggestions);
mAutoCompleteList.setAdapter(adapter);
positionAndShowPopup(rect, zoom, true);
}
private void showValidationMessage(String validationMessage, JSONArray rect, double zoom) {
if (mValidationMessage == null) {
LayoutInflater inflater = LayoutInflater.from(mContext);
mValidationMessage = (RelativeLayout) inflater.inflate(R.layout.validation_message, null);
addView(mValidationMessage);
mValidationMessageText = (TextView) mValidationMessage.findViewById(R.id.validation_message_text);
}
validationMessage = "This is an incredibly long validation message to test the width of the popup.";
mValidationMessageText.setText(validationMessage);
// We need to set the text as selected for the marquee text to work.
mValidationMessageText.setSelected(true);
positionAndShowPopup(rect, zoom, false);
}
// Returns true if the popup is successfully shown, false otherwise
private boolean positionAndShowPopup(JSONArray rect, double zoom, boolean isAutoComplete) {
// Don't show the form assist popup when using fullscreen VKB
InputMethodManager imm =
(InputMethodManager) GeckoApp.mAppContext.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm.isFullscreenMode())
return false;
if (!isShown()) {
setVisibility(VISIBLE);
startAnimation(mAnimation);
}
// Hide/show the appropriate popup contents
if (mAutoCompleteList != null)
mAutoCompleteList.setVisibility(isAutoComplete ? VISIBLE : GONE);
if (mValidationMessage != null)
mValidationMessage.setVisibility(isAutoComplete ? GONE : VISIBLE);
// Initialize static variables based on DisplayMetrics. We delay this to
// make sure DisplayMetrics isn't null to avoid an NPE.
if (sAutoCompleteMinWidth == 0) {
DisplayMetrics metrics = new DisplayMetrics();
GeckoApp.mAppContext.getWindowManager().getDefaultDisplay().getMetrics(metrics);
sAutoCompleteMinWidth = (int) (AUTOCOMPLETE_MIN_WIDTH_IN_DPI * metrics.density);
sAutoCompleteRowHeight = (int) (AUTOCOMPLETE_ROW_HEIGHT_IN_DPI * metrics.density);
sValidationMessageHeight = (int) (VALIDATION_MESSAGE_HEIGHT_IN_DPI * metrics.density);
}
// These values correspond to the input box for which we want to
// display the FormAssistPopup.
int left = 0;
int top = 0;
int width = 0;
int height = 0;
try {
left = (int) (rect.getDouble(0) * zoom);
top = (int) (rect.getDouble(1) * zoom);
width = (int) (rect.getDouble(2) * zoom);
height = (int) (rect.getDouble(3) * zoom);
} catch (JSONException e) { }
int popupWidth = RelativeLayout.LayoutParams.FILL_PARENT;
int popupLeft = left < 0 ? 0 : left;
FloatSize viewport = GeckoApp.mAppContext.getLayerController().getViewportSize();
// For autocomplete suggestions, if the input is smaller than the screen-width,
// shrink the popup's width. Otherwise, keep it as FILL_PARENT.
if (isAutoComplete && (left + width) < viewport.width) {
popupWidth = left < 0 ? left + width : width;
// Ensure the popup has a minimum width.
if (popupWidth < sAutoCompleteMinWidth) {
popupWidth = sAutoCompleteMinWidth;
// Move the popup to the left if there isn't enough room for it.
if ((popupLeft + popupWidth) > viewport.width)
popupLeft = (int) (viewport.width - popupWidth);
}
}
int popupHeight;
if (isAutoComplete)
popupHeight = sAutoCompleteRowHeight * mAutoCompleteList.getAdapter().getCount();
else
popupHeight = sValidationMessageHeight;
int popupTop = top + height;
// If the popup doesn't fit below the input box, shrink its height, or
// see if we can place it above the input instead.
if ((popupTop + popupHeight) > viewport.height) {
// Find where the maximum space is, and put the popup there.
if ((viewport.height - popupTop) > top) {
// Shrink the height to fit it below the input box.
popupHeight = (int) (viewport.height - popupTop);
} else {
if (popupHeight < top) {
// No shrinking needed to fit on top.
popupTop = (top - popupHeight);
} else {
// Shrink to available space on top.
popupTop = 0;
popupHeight = top;
}
}
}
RelativeLayout.LayoutParams layoutParams =
new RelativeLayout.LayoutParams(popupWidth, popupHeight);
layoutParams.setMargins(popupLeft, popupTop, 0, 0);
setLayoutParams(layoutParams);
requestLayout();
return true;
}
public void hide() {
if (isShown()) {
setVisibility(GONE);
GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("FormAssist:Hidden", null));
}
}
private class AutoCompleteListAdapter extends ArrayAdapter<Pair<String, String>> {
private LayoutInflater mInflater;
private int mTextViewResourceId;
public AutoCompleteListAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mTextViewResourceId = textViewResourceId;
}
// This method takes an array of autocomplete suggestions with label/value properties
// and adds label/value Pair objects to the array that backs the adapter.
public void populateSuggestionsList(JSONArray suggestions) {
try {
for (int i = 0; i < suggestions.length(); i++) {
JSONObject suggestion = suggestions.getJSONObject(i);
String label = suggestion.getString("label");
String value = suggestion.getString("value");
add(new Pair<String, String>(label, value));
}
} catch (JSONException e) {
Log.e(LOGTAG, "JSONException: " + e);
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null)
convertView = mInflater.inflate(mTextViewResourceId, null);
Pair<String, String> item = getItem(position);
TextView itemView = (TextView) convertView;
// Set the text with the suggestion label
itemView.setText(item.first);
// Set a tag with the suggestion value
itemView.setTag(item.second);
return convertView;
}
}
}