1/*
2 * Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26var noResult = {l: "##REPLACE:doclet.search.no_results##"};
27var loading = {l: "##REPLACE:doclet.search.loading##"};
28var catModules = "##REPLACE:doclet.search.modules##";
29var catPackages = "##REPLACE:doclet.search.packages##";
30var catTypes = "##REPLACE:doclet.search.types##";
31var catMembers = "##REPLACE:doclet.search.members##";
32var catSearchTags = "##REPLACE:doclet.search.search_tags##";
33var highlight = "<span class=\"result-highlight\">$&</span>";
34var searchPattern = "";
35var fallbackPattern = "";
36var RANKING_THRESHOLD = 2;
37var NO_MATCH = 0xffff;
38var MIN_RESULTS = 3;
39var MAX_RESULTS = 500;
40var UNNAMED = "<Unnamed>";
41function escapeHtml(str) {
42    return str.replace(/</g, "&lt;").replace(/>/g, "&gt;");
43}
44function getHighlightedText(item, matcher, fallbackMatcher) {
45    var escapedItem = escapeHtml(item);
46    var highlighted = escapedItem.replace(matcher, highlight);
47    if (highlighted === escapedItem) {
48        highlighted = escapedItem.replace(fallbackMatcher, highlight)
49    }
50    return highlighted;
51}
52function getURLPrefix(ui) {
53    var urlPrefix="";
54    var slash = "/";
55    if (ui.item.category === catModules) {
56        return ui.item.l + slash;
57    } else if (ui.item.category === catPackages && ui.item.m) {
58        return ui.item.m + slash;
59    } else if (ui.item.category === catTypes || ui.item.category === catMembers) {
60        if (ui.item.m) {
61            urlPrefix = ui.item.m + slash;
62        } else {
63            $.each(packageSearchIndex, function(index, item) {
64                if (item.m && ui.item.p === item.l) {
65                    urlPrefix = item.m + slash;
66                }
67            });
68        }
69    }
70    return urlPrefix;
71}
72function createSearchPattern(term) {
73    var pattern = "";
74    var isWordToken = false;
75    term.replace(/,\s*/g, ", ").trim().split(/\s+/).forEach(function(w, index) {
76        if (index > 0) {
77            // whitespace between identifiers is significant
78            pattern += (isWordToken && /^\w/.test(w)) ? "\\s+" : "\\s*";
79        }
80        var tokens = w.split(/(?=[A-Z,.()<>[\/])/);
81        for (var i = 0; i < tokens.length; i++) {
82            var s = tokens[i];
83            if (s === "") {
84                continue;
85            }
86            pattern += $.ui.autocomplete.escapeRegex(s);
87            isWordToken =  /\w$/.test(s);
88            if (isWordToken) {
89                pattern += "([a-z0-9_$<>\\[\\]]*?)";
90            }
91        }
92    });
93    return pattern;
94}
95function createMatcher(pattern, flags) {
96    var isCamelCase = /[A-Z]/.test(pattern);
97    return new RegExp(pattern, flags + (isCamelCase ? "" : "i"));
98}
99var watermark = 'Search';
100$(function() {
101    var search = $("#search");
102    var reset = $("#reset");
103    search.val('');
104    search.prop("disabled", false);
105    reset.prop("disabled", false);
106    search.val(watermark).addClass('watermark');
107    search.blur(function() {
108        if ($(this).val().length === 0) {
109            $(this).val(watermark).addClass('watermark');
110        }
111    });
112    search.on('click keydown paste', function() {
113        if ($(this).val() === watermark) {
114            $(this).val('').removeClass('watermark');
115        }
116    });
117    reset.click(function() {
118        search.val('').focus();
119    });
120    search.focus()[0].setSelectionRange(0, 0);
121});
122$.widget("custom.catcomplete", $.ui.autocomplete, {
123    _create: function() {
124        this._super();
125        this.widget().menu("option", "items", "> :not(.ui-autocomplete-category)");
126    },
127    _renderMenu: function(ul, items) {
128        var rMenu = this;
129        var currentCategory = "";
130        rMenu.menu.bindings = $();
131        $.each(items, function(index, item) {
132            var li;
133            if (item.category && item.category !== currentCategory) {
134                ul.append("<li class=\"ui-autocomplete-category\">" + item.category + "</li>");
135                currentCategory = item.category;
136            }
137            li = rMenu._renderItemData(ul, item);
138            if (item.category) {
139                li.attr("aria-label", item.category + " : " + item.l);
140                li.attr("class", "result-item");
141            } else {
142                li.attr("aria-label", item.l);
143                li.attr("class", "result-item");
144            }
145        });
146    },
147    _renderItem: function(ul, item) {
148        var label = "";
149        var matcher = createMatcher(escapeHtml(searchPattern), "g");
150        var fallbackMatcher = new RegExp(fallbackPattern, "gi")
151        if (item.category === catModules) {
152            label = getHighlightedText(item.l, matcher, fallbackMatcher);
153        } else if (item.category === catPackages) {
154            label = getHighlightedText(item.l, matcher, fallbackMatcher);
155        } else if (item.category === catTypes) {
156            label = (item.p && item.p !== UNNAMED)
157                    ? getHighlightedText(item.p + "." + item.l, matcher, fallbackMatcher)
158                    : getHighlightedText(item.l, matcher, fallbackMatcher);
159        } else if (item.category === catMembers) {
160            label = (item.p && item.p !== UNNAMED)
161                    ? getHighlightedText(item.p + "." + item.c + "." + item.l, matcher, fallbackMatcher)
162                    : getHighlightedText(item.c + "." + item.l, matcher, fallbackMatcher);
163        } else if (item.category === catSearchTags) {
164            label = getHighlightedText(item.l, matcher, fallbackMatcher);
165        } else {
166            label = item.l;
167        }
168        var li = $("<li/>").appendTo(ul);
169        var div = $("<div/>").appendTo(li);
170        if (item.category === catSearchTags && item.h) {
171            if (item.d) {
172                div.html(label + "<span class=\"search-tag-holder-result\"> (" + item.h + ")</span><br><span class=\"search-tag-desc-result\">"
173                                + item.d + "</span><br>");
174            } else {
175                div.html(label + "<span class=\"search-tag-holder-result\"> (" + item.h + ")</span>");
176            }
177        } else {
178            if (item.m) {
179                div.html(item.m + "/" + label);
180            } else {
181                div.html(label);
182            }
183        }
184        return li;
185    }
186});
187function rankMatch(match, category) {
188    if (!match) {
189        return NO_MATCH;
190    }
191    var index = match.index;
192    var input = match.input;
193    var leftBoundaryMatch = 2;
194    var periferalMatch = 0;
195    // make sure match is anchored on a left word boundary
196    if (index === 0 || /\W/.test(input[index - 1]) || "_" === input[index]) {
197        leftBoundaryMatch = 0;
198    } else if ("_" === input[index - 1] || (input[index] === input[index].toUpperCase() && !/^[A-Z0-9_$]+$/.test(input))) {
199        leftBoundaryMatch = 1;
200    }
201    var matchEnd = index + match[0].length;
202    var leftParen = input.indexOf("(");
203    var endOfName = leftParen > -1 ? leftParen : input.length;
204    // exclude peripheral matches
205    if (category !== catModules && category !== catSearchTags) {
206        var delim = category === catPackages ? "/" : ".";
207        if (leftParen > -1 && leftParen < index) {
208            periferalMatch += 2;
209        } else if (input.lastIndexOf(delim, endOfName) >= matchEnd) {
210            periferalMatch += 2;
211        }
212    }
213    var delta = match[0].length === endOfName ? 0 : 1; // rank full match higher than partial match
214    for (var i = 1; i < match.length; i++) {
215        // lower ranking if parts of the name are missing
216        if (match[i])
217            delta += match[i].length;
218    }
219    if (category === catTypes) {
220        // lower ranking if a type name contains unmatched camel-case parts
221        if (/[A-Z]/.test(input.substring(matchEnd)))
222            delta += 5;
223        if (/[A-Z]/.test(input.substring(0, index)))
224            delta += 5;
225    }
226    return leftBoundaryMatch + periferalMatch + (delta / 200);
227
228}
229function doSearch(request, response) {
230    var result = [];
231    searchPattern = createSearchPattern(request.term);
232    fallbackPattern = createSearchPattern(request.term.toLowerCase());
233    if (searchPattern === "") {
234        return this.close();
235    }
236    var camelCaseMatcher = createMatcher(searchPattern, "");
237    var fallbackMatcher = new RegExp(fallbackPattern, "i");
238
239    function searchIndexWithMatcher(indexArray, matcher, category, nameFunc) {
240        if (indexArray) {
241            var newResults = [];
242            $.each(indexArray, function (i, item) {
243                item.category = category;
244                var ranking = rankMatch(matcher.exec(nameFunc(item)), category);
245                if (ranking < RANKING_THRESHOLD) {
246                    newResults.push({ranking: ranking, item: item});
247                }
248                return newResults.length <= MAX_RESULTS;
249            });
250            return newResults.sort(function(e1, e2) {
251                return e1.ranking - e2.ranking;
252            }).map(function(e) {
253                return e.item;
254            });
255        }
256        return [];
257    }
258    function searchIndex(indexArray, category, nameFunc) {
259        var primaryResults = searchIndexWithMatcher(indexArray, camelCaseMatcher, category, nameFunc);
260        result = result.concat(primaryResults);
261        if (primaryResults.length <= MIN_RESULTS && camelCaseMatcher.flags.indexOf("i") === -1) {
262            var secondaryResults = searchIndexWithMatcher(indexArray, fallbackMatcher, category, nameFunc);
263            result = result.concat(secondaryResults.filter(function (item) {
264                return primaryResults.indexOf(item) === -1;
265            }));
266        }
267    }
268
269    searchIndex(moduleSearchIndex, catModules, function(item) { return item.l; });
270    searchIndex(packageSearchIndex, catPackages, function(item) {
271        return (item.m && request.term.indexOf("/") > -1)
272            ? (item.m + "/" + item.l) : item.l;
273    });
274    searchIndex(typeSearchIndex, catTypes, function(item) {
275        return request.term.indexOf(".") > -1 ? item.p + "." + item.l : item.l;
276    });
277    searchIndex(memberSearchIndex, catMembers, function(item) {
278        return request.term.indexOf(".") > -1
279            ? item.p + "." + item.c + "." + item.l : item.l;
280    });
281    searchIndex(tagSearchIndex, catSearchTags, function(item) { return item.l; });
282
283    if (!indexFilesLoaded()) {
284        updateSearchResults = function() {
285            doSearch(request, response);
286        }
287        result.unshift(loading);
288    } else {
289        updateSearchResults = function() {};
290    }
291    response(result);
292}
293$(function() {
294    $("#search").catcomplete({
295        minLength: 1,
296        delay: 300,
297        source: doSearch,
298        response: function(event, ui) {
299            if (!ui.content.length) {
300                ui.content.push(noResult);
301            } else {
302                $("#search").empty();
303            }
304        },
305        autoFocus: true,
306        focus: function(event, ui) {
307            return false;
308        },
309        position: {
310            collision: "flip"
311        },
312        select: function(event, ui) {
313            if (ui.item.category) {
314                var url = getURLPrefix(ui);
315                if (ui.item.category === catModules) {
316                    url += "module-summary.html";
317                } else if (ui.item.category === catPackages) {
318                    if (ui.item.u) {
319                        url = ui.item.u;
320                    } else {
321                        url += ui.item.l.replace(/\./g, '/') + "/package-summary.html";
322                    }
323                } else if (ui.item.category === catTypes) {
324                    if (ui.item.u) {
325                        url = ui.item.u;
326                    } else if (ui.item.p === UNNAMED) {
327                        url += ui.item.l + ".html";
328                    } else {
329                        url += ui.item.p.replace(/\./g, '/') + "/" + ui.item.l + ".html";
330                    }
331                } else if (ui.item.category === catMembers) {
332                    if (ui.item.p === UNNAMED) {
333                        url += ui.item.c + ".html" + "#";
334                    } else {
335                        url += ui.item.p.replace(/\./g, '/') + "/" + ui.item.c + ".html" + "#";
336                    }
337                    if (ui.item.u) {
338                        url += ui.item.u;
339                    } else {
340                        url += ui.item.l;
341                    }
342                } else if (ui.item.category === catSearchTags) {
343                    url += ui.item.u;
344                }
345                if (top !== window) {
346                    parent.classFrame.location = pathtoroot + url;
347                } else {
348                    window.location.href = pathtoroot + url;
349                }
350                $("#search").focus();
351            }
352        }
353    });
354});
355