summaryrefslogtreecommitdiffstats
path: root/docs/com/plugin/search/search.js
blob: ae6582e75d9e8d1c5efa696711980b5779f3082a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
/*
 * Handles finding a text string anywhere in the slides and showing the next occurrence to the user
 * by navigatating to that slide and highlighting it.
 *
 * By Jon Snyder <snyder.jon@gmail.com>, February 2013
 */

var RevealSearch = (function() {

	var matchedSlides;
	var currentMatchedIndex;
	var searchboxDirty;
	var myHilitor;

// Original JavaScript code by Chirp Internet: www.chirp.com.au
// Please acknowledge use of this code by including this header.
// 2/2013 jon: modified regex to display any match, not restricted to word boundaries.

function Hilitor(id, tag)
{

  var targetNode = document.getElementById(id) || document.body;
  var hiliteTag = tag || "EM";
  var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM|SPAN)$");
  var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"];
  var wordColor = [];
  var colorIdx = 0;
  var matchRegex = "";
  var matchingSlides = [];

  this.setRegex = function(input)
  {
    input = input.replace(/^[^\w]+|[^\w]+$/g, "").replace(/[^\w'-]+/g, "|");
    matchRegex = new RegExp("(" + input + ")","i");
  }

  this.getRegex = function()
  {
    return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " ");
  }

  // recursively apply word highlighting
  this.hiliteWords = function(node)
  {
    if(node == undefined || !node) return;
    if(!matchRegex) return;
    if(skipTags.test(node.nodeName)) return;

    if(node.hasChildNodes()) {
      for(var i=0; i < node.childNodes.length; i++)
        this.hiliteWords(node.childNodes[i]);
    }
    if(node.nodeType == 3) { // NODE_TEXT
      if((nv = node.nodeValue) && (regs = matchRegex.exec(nv))) {
      	//find the slide's section element and save it in our list of matching slides
      	var secnode = node.parentNode;
      	while (secnode.nodeName != 'SECTION') {
      		secnode = secnode.parentNode;
      	}
      	
      	var slideIndex = Reveal.getIndices(secnode);
      	var slidelen = matchingSlides.length;
      	var alreadyAdded = false;
      	for (var i=0; i < slidelen; i++) {
      		if ( (matchingSlides[i].h === slideIndex.h) && (matchingSlides[i].v === slideIndex.v) ) {
      			alreadyAdded = true;
      		}
      	}
      	if (! alreadyAdded) {
      		matchingSlides.push(slideIndex);
      	}
      	
        if(!wordColor[regs[0].toLowerCase()]) {
          wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length];
        }

        var match = document.createElement(hiliteTag);
        match.appendChild(document.createTextNode(regs[0]));
        match.style.backgroundColor = wordColor[regs[0].toLowerCase()];
        match.style.fontStyle = "inherit";
        match.style.color = "#000";

        var after = node.splitText(regs.index);
        after.nodeValue = after.nodeValue.substring(regs[0].length);
        node.parentNode.insertBefore(match, after);
      }
    }
  };

  // remove highlighting
  this.remove = function()
  {
    var arr = document.getElementsByTagName(hiliteTag);
    while(arr.length && (el = arr[0])) {
      el.parentNode.replaceChild(el.firstChild, el);
    }
  };

  // start highlighting at target node
  this.apply = function(input)
  {
    if(input == undefined || !input) return;
    this.remove();
    this.setRegex(input);
    this.hiliteWords(targetNode);
    return matchingSlides;
  };

}

	function openSearch() {
		//ensure the search term input dialog is visible and has focus:
		var inputbox = document.getElementById("searchinput");
		inputbox.style.display = "inline";
		inputbox.focus();
		inputbox.select();
	}

	function toggleSearch() {
		var inputbox = document.getElementById("searchinput");
		if (inputbox.style.display !== "inline") {
			openSearch();
		}
		else {
			inputbox.style.display = "none";
			myHilitor.remove();
		}
	}

	function doSearch() {
		//if there's been a change in the search term, perform a new search:
		if (searchboxDirty) {
			var searchstring = document.getElementById("searchinput").value;

			//find the keyword amongst the slides
			myHilitor = new Hilitor("slidecontent");
			matchedSlides = myHilitor.apply(searchstring);
			currentMatchedIndex = 0;
		}

		//navigate to the next slide that has the keyword, wrapping to the first if necessary
		if (matchedSlides.length && (matchedSlides.length <= currentMatchedIndex)) {
			currentMatchedIndex = 0;
		}
		if (matchedSlides.length > currentMatchedIndex) {
			Reveal.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v);
			currentMatchedIndex++;
		}
	}

	var dom = {};
	dom.wrapper = document.querySelector( '.reveal' );

	if( !dom.wrapper.querySelector( '.searchbox' ) ) {
			var searchElement = document.createElement( 'div' );
			searchElement.id = "searchinputdiv";
			searchElement.classList.add( 'searchdiv' );
      searchElement.style.position = 'absolute';
      searchElement.style.top = '10px';
      searchElement.style.left = '10px';
      //embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/:
			searchElement.innerHTML = '<span><input type="search" id="searchinput" class="searchinput" style="vertical-align: top;"/><img src="data:image/png;base64,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" id="searchbutton" class="searchicon" style="vertical-align: top; margin-top: -1px;"/></span>';
			dom.wrapper.appendChild( searchElement );
	}

	document.getElementById("searchbutton").addEventListener( 'click', function(event) {
		doSearch();
	}, false );

	document.getElementById("searchinput").addEventListener( 'keyup', function( event ) {
		switch (event.keyCode) {
			case 13:
				event.preventDefault();
				doSearch();
				searchboxDirty = false;
				break;
			default:
				searchboxDirty = true;
		}
	}, false );

	// Open the search when the 's' key is hit (yes, this conflicts with the notes plugin, disabling for now)
	/*
	document.addEventListener( 'keydown', function( event ) {
		// Disregard the event if the target is editable or a
		// modifier is present
		if ( document.querySelector( ':focus' ) !== null || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;

		if( event.keyCode === 83 ) {
			event.preventDefault();
			openSearch();
		}
	}, false );
*/
	return { open: openSearch };
})();