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1var gSelectedIndex = -1;
2var gSelectedID = -1;
3var gMatches = new Array();
4var gLastText = "";
5var ROW_COUNT = 20;
6var gInitialized = false;
7var DEFAULT_TEXT = "search developer docs";
8
9function set_row_selected(row, selected)
10{
11    var c1 = row.cells[0];
12  //  var c2 = row.cells[1];
13    if (selected) {
14        c1.className = "jd-autocomplete jd-selected";
15  //      c2.className = "jd-autocomplete jd-selected jd-linktype";
16    } else {
17        c1.className = "jd-autocomplete";
18  //      c2.className = "jd-autocomplete jd-linktype";
19    }
20}
21
22function set_row_values(toroot, row, match)
23{
24    var link = row.cells[0].childNodes[0];
25    link.innerHTML = match.__hilabel || match.label;
26    link.href = toroot + match.link
27  //  row.cells[1].innerHTML = match.type;
28}
29
30function sync_selection_table(toroot)
31{
32    var filtered = document.getElementById("search_filtered");
33    var r; //TR DOM object
34    var i; //TR iterator
35    gSelectedID = -1;
36
37    filtered.onmouseover = function() {
38        if(gSelectedIndex >= 0) {
39          set_row_selected(this.rows[gSelectedIndex], false);
40          gSelectedIndex = -1;
41        }
42    }
43
44    //initialize the table; draw it for the first time (but not visible).
45    if (!gInitialized) {
46        for (i=0; i<ROW_COUNT; i++) {
47            var r = filtered.insertRow(-1);
48            var c1 = r.insertCell(-1);
49        //    var c2 = r.insertCell(-1);
50            c1.className = "jd-autocomplete";
51         //   c2.className = "jd-autocomplete jd-linktype";
52            var link = document.createElement("a");
53            c1.onmousedown = function() {
54                window.location = this.firstChild.getAttribute("href");
55            }
56            c1.onmouseover = function() {
57                this.className = this.className + " jd-selected";
58            }
59            c1.onmouseout = function() {
60                this.className = "jd-autocomplete";
61            }
62            c1.appendChild(link);
63        }
64  /*      var r = filtered.insertRow(-1);
65        var c1 = r.insertCell(-1);
66        c1.className = "jd-autocomplete jd-linktype";
67        c1.colSpan = 2; */
68        gInitialized = true;
69    }
70
71    //if we have results, make the table visible and initialize result info
72    if (gMatches.length > 0) {
73        document.getElementById("search_filtered_div").className = "showing";
74        var N = gMatches.length < ROW_COUNT ? gMatches.length : ROW_COUNT;
75        for (i=0; i<N; i++) {
76            r = filtered.rows[i];
77            r.className = "show-row";
78            set_row_values(toroot, r, gMatches[i]);
79            set_row_selected(r, i == gSelectedIndex);
80            if (i == gSelectedIndex) {
81                gSelectedID = gMatches[i].id;
82            }
83        }
84        //start hiding rows that are no longer matches
85        for (; i<ROW_COUNT; i++) {
86            r = filtered.rows[i];
87            r.className = "no-display";
88        }
89        //if there are more results we're not showing, so say so.
90/*      if (gMatches.length > ROW_COUNT) {
91            r = filtered.rows[ROW_COUNT];
92            r.className = "show-row";
93            c1 = r.cells[0];
94            c1.innerHTML = "plus " + (gMatches.length-ROW_COUNT) + " more";
95        } else {
96            filtered.rows[ROW_COUNT].className = "hide-row";
97        }*/
98    //if we have no results, hide the table
99    } else {
100        document.getElementById("search_filtered_div").className = "no-display";
101    }
102}
103
104function search_changed(e, kd, toroot)
105{
106    var search = document.getElementById("search_autocomplete");
107    var text = search.value.replace(/(^ +)|( +$)/g, '');
108
109    // 13 = enter
110    if (e.keyCode == 13) {
111        document.getElementById("search_filtered_div").className = "no-display";
112        if (kd && gSelectedIndex >= 0) {
113            window.location = toroot + gMatches[gSelectedIndex].link;
114            return false;
115        } else if (gSelectedIndex < 0) {
116            return true;
117        }
118    }
119    // 38 -- arrow up
120    else if (kd && (e.keyCode == 38)) {
121        if (gSelectedIndex >= 0) {
122            gSelectedIndex--;
123        }
124        sync_selection_table(toroot);
125        return false;
126    }
127    // 40 -- arrow down
128    else if (kd && (e.keyCode == 40)) {
129        if (gSelectedIndex < gMatches.length-1
130                        && gSelectedIndex < ROW_COUNT-1) {
131            gSelectedIndex++;
132        }
133        sync_selection_table(toroot);
134        return false;
135    }
136    else if (!kd) {
137        gMatches = new Array();
138        matchedCount = 0;
139        gSelectedIndex = -1;
140        for (var i=0; i<DATA.length; i++) {
141            var s = DATA[i];
142            if (text.length != 0 &&
143                  s.label.toLowerCase().indexOf(text.toLowerCase()) != -1) {
144                gMatches[matchedCount] = s;
145                matchedCount++;
146            }
147        }
148        rank_autocomplete_results(text);
149        for (var i=0; i<gMatches.length; i++) {
150            var s = gMatches[i];
151            if (gSelectedID == s.id) {
152                gSelectedIndex = i;
153            }
154        }
155        highlight_autocomplete_result_labels(text);
156        sync_selection_table(toroot);
157        return true; // allow the event to bubble up to the search api
158    }
159}
160
161function rank_autocomplete_results(query) {
162    query = query || '';
163    if (!gMatches || !gMatches.length)
164      return;
165
166    // helper function that gets the last occurence index of the given regex
167    // in the given string, or -1 if not found
168    var _lastSearch = function(s, re) {
169      if (s == '')
170        return -1;
171      var l = -1;
172      var tmp;
173      while ((tmp = s.search(re)) >= 0) {
174        if (l < 0) l = 0;
175        l += tmp;
176        s = s.substr(tmp + 1);
177      }
178      return l;
179    };
180
181    // helper function that counts the occurrences of a given character in
182    // a given string
183    var _countChar = function(s, c) {
184      var n = 0;
185      for (var i=0; i<s.length; i++)
186        if (s.charAt(i) == c) ++n;
187      return n;
188    };
189
190    var queryLower = query.toLowerCase();
191    var queryAlnum = (queryLower.match(/\w+/) || [''])[0];
192    var partPrefixAlnumRE = new RegExp('\\b' + queryAlnum);
193    var partExactAlnumRE = new RegExp('\\b' + queryAlnum + '\\b');
194
195    var _resultScoreFn = function(result) {
196        // scores are calculated based on exact and prefix matches,
197        // and then number of path separators (dots) from the last
198        // match (i.e. favoring classes and deep package names)
199        var score = 1.0;
200        var labelLower = result.label.toLowerCase();
201        var t;
202        t = _lastSearch(labelLower, partExactAlnumRE);
203        if (t >= 0) {
204            // exact part match
205            var partsAfter = _countChar(labelLower.substr(t + 1), '.');
206            score *= 200 / (partsAfter + 1);
207        } else {
208            t = _lastSearch(labelLower, partPrefixAlnumRE);
209            if (t >= 0) {
210                // part prefix match
211                var partsAfter = _countChar(labelLower.substr(t + 1), '.');
212                score *= 20 / (partsAfter + 1);
213            }
214        }
215
216        return score;
217    };
218
219    for (var i=0; i<gMatches.length; i++) {
220        gMatches[i].__resultScore = _resultScoreFn(gMatches[i]);
221    }
222
223    gMatches.sort(function(a,b){
224        var n = b.__resultScore - a.__resultScore;
225        if (n == 0) // lexicographical sort if scores are the same
226            n = (a.label < b.label) ? -1 : 1;
227        return n;
228    });
229}
230
231function highlight_autocomplete_result_labels(query) {
232    query = query || '';
233    if (!gMatches || !gMatches.length)
234      return;
235
236    var queryLower = query.toLowerCase();
237    var queryAlnumDot = (queryLower.match(/[\w\.]+/) || [''])[0];
238    var queryRE = new RegExp(
239        '(' + queryAlnumDot.replace(/\./g, '\\.') + ')', 'ig');
240    for (var i=0; i<gMatches.length; i++) {
241        gMatches[i].__hilabel = gMatches[i].label.replace(
242            queryRE, '<b>$1</b>');
243    }
244}
245
246function search_focus_changed(obj, focused)
247{
248    if (focused) {
249        if(obj.value == DEFAULT_TEXT){
250            obj.value = "";
251            obj.style.color="#000000";
252        }
253    } else {
254        if(obj.value == ""){
255          obj.value = DEFAULT_TEXT;
256          obj.style.color="#aaaaaa";
257        }
258        document.getElementById("search_filtered_div").className = "no-display";
259    }
260}
261
262function submit_search() {
263  var query = document.getElementById('search_autocomplete').value;
264  document.location = toRoot + 'search.html#q=' + query + '&t=0';
265  return false;
266}
267