UrlInputView.java revision a2b2ba8da913f26c820e49d3e43158e2fe6ebeba 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.browser;
18
19import android.app.SearchManager;
20import android.content.ContentResolver;
21import android.content.Context;
22import android.database.Cursor;
23import android.graphics.drawable.Drawable;
24import android.util.AttributeSet;
25import android.view.KeyEvent;
26import android.view.LayoutInflater;
27import android.view.View;
28import android.view.View.OnFocusChangeListener;
29import android.view.ViewGroup;
30import android.view.inputmethod.InputMethodManager;
31import android.widget.AdapterView;
32import android.widget.AdapterView.OnItemClickListener;
33import android.widget.AutoCompleteTextView;
34import android.widget.CursorAdapter;
35import android.widget.Filterable;
36import android.widget.ImageView;
37import android.widget.TextView;
38
39/**
40 * url/search input view
41 * handling suggestions
42 */
43public class UrlInputView extends AutoCompleteTextView
44        implements OnFocusChangeListener, OnItemClickListener {
45
46    private UrlInputListener   mListener;
47    private InputMethodManager mInputManager;
48    private SuggestionsAdapter mAdapter;
49    private Drawable           mFocusDrawable;
50
51    public UrlInputView(Context context, AttributeSet attrs, int defStyle) {
52        super(context, attrs, defStyle);
53        init(context);
54    }
55
56    public UrlInputView(Context context, AttributeSet attrs) {
57        super(context, attrs);
58        init(context);
59    }
60
61    public UrlInputView(Context context) {
62        super(context);
63        init(context);
64    }
65
66    private void init(Context ctx) {
67        mFocusDrawable = ctx.getResources().getDrawable(R.drawable.textfield_stroke);
68        mInputManager = (InputMethodManager) ctx.getSystemService(Context.INPUT_METHOD_SERVICE);
69        setOnEditorActionListener(new OnEditorActionListener() {
70            @Override
71            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
72                finishInput(getText().toString());
73                return true;
74            }
75        });
76        setOnFocusChangeListener(this);
77        final ContentResolver cr = mContext.getContentResolver();
78        mAdapter = new SuggestionsAdapter(mContext,
79                BrowserProvider.getBookmarksSuggestions(cr, null));
80        setAdapter(mAdapter);
81        setOnItemClickListener(this);
82        setSelectAllOnFocus(true);
83    }
84
85    @Override
86    public void onFocusChange(View v, boolean hasFocus) {
87        setBackgroundDrawable(hasFocus ? mFocusDrawable : null);
88        if (hasFocus) {
89            forceIme();
90        } else {
91            finishInput(null);
92        }
93    }
94
95    @Override
96    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
97        String url = mAdapter.getViewString(view);
98        finishInput(url);
99    }
100
101
102    public void setUrlInputListener(UrlInputListener listener) {
103        mListener = listener;
104    }
105
106    public void forceIme() {
107        mInputManager.showSoftInput(this, 0);
108    }
109
110    private void finishInput(String url) {
111        this.dismissDropDown();
112        mInputManager.hideSoftInputFromWindow(getWindowToken(), 0);
113        if (url == null) {
114            mListener.onDismiss();
115        } else {
116            mListener.onAction(url);
117        }
118    }
119
120    @Override
121    public boolean onKeyPreIme(int keyCode, KeyEvent evt) {
122        if (keyCode == KeyEvent.KEYCODE_BACK) {
123            // catch back key in order to do slightly more cleanup than usual
124            finishInput(null);
125            return true;
126        }
127        return super.onKeyPreIme(keyCode, evt);
128    }
129
130    interface UrlInputListener {
131        public void onDismiss();
132        public void onAction(String text);
133    }
134
135    /**
136     * adapter used by suggestion dropdown
137     */
138    class SuggestionsAdapter extends CursorAdapter implements Filterable {
139
140        private Cursor          mLastCursor;
141        private ContentResolver mContent;
142        private int             mIndexText1;
143        private int             mIndexText2;
144        private int             mIndexIcon;
145
146        public SuggestionsAdapter(Context context, Cursor c) {
147            super(context, c);
148            mContent = context.getContentResolver();
149            mIndexText1 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1);
150            mIndexText2 = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_2_URL);
151            mIndexIcon = c.getColumnIndex(SearchManager.SUGGEST_COLUMN_ICON_1);
152        }
153
154        public String getViewString(View view) {
155            TextView tv2 = (TextView) view.findViewById(android.R.id.text2);
156            if (tv2.getText().length() > 0) {
157                return tv2.getText().toString();
158            } else {
159                TextView tv1 = (TextView) view.findViewById(android.R.id.text1);
160                return tv1.getText().toString();
161            }
162        }
163
164        @Override
165        public View newView(Context context, Cursor cursor, ViewGroup parent) {
166            final LayoutInflater inflater = LayoutInflater.from(context);
167            final View view = inflater.inflate(
168                    R.layout.simple_dropdown_item_2line, parent, false);
169            bindView(view, context, cursor);
170            return view;
171        }
172
173        @Override
174        public void bindView(View view, Context context, Cursor cursor) {
175            TextView tv1 = (TextView) view.findViewById(android.R.id.text1);
176            TextView tv2 = (TextView) view.findViewById(android.R.id.text2);
177            ImageView ic1 = (ImageView) view.findViewById(R.id.icon1);
178            tv1.setText(cursor.getString(mIndexText1));
179            String url = cursor.getString(mIndexText2);
180            tv2.setText((url != null) ? url : "");
181            // assume an id
182            try {
183                int id = Integer.parseInt(cursor.getString(mIndexIcon));
184                Drawable d = context.getResources().getDrawable(id);
185                ic1.setImageDrawable(d);
186            } catch (NumberFormatException nfx) {
187            }
188        }
189
190        @Override
191        public String convertToString(Cursor cursor) {
192            return cursor.getString(mIndexText1);
193        }
194
195        @Override
196        public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
197            if (getFilterQueryProvider() != null) {
198                return getFilterQueryProvider().runQuery(constraint);
199            }
200            mLastCursor = BrowserProvider.getBookmarksSuggestions(mContent,
201                    (constraint != null) ? constraint.toString() : null);
202            return mLastCursor;
203        }
204
205    }
206
207}
208