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jquery.summary-06.js
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/** @file
*
* A simple jQuery widget to present an article along with summarization
* information about that article.
*
* Requires:
* jquery.js
* jquery-ui.js
* jquery.delegateHoverIntent.js
* rangy.js
* rangy/seializer.js
*/
(function($) {
/** @brief Summary widget */
$.fn.summary = function(options) {
options = options || {};
return this.each(function() {
var $el = $(this);
$el.data('summary', new $.Summary( $el, options ));
});
};
/** @brief The Summary class */
$.Summary = function($el, options) {
return this.init($el, options);
};
$.Summary.prototype = {
options: {
src: null, // The URL of the original source
metadata: null, /* The URL of the
* summarization/characterization metadata
*/
threshold: { // The desired min/max threshold
min: -1, // If -1,-1, dynamically determine the
max: -1 // threshold based upon 'showSentences'
},
filter: 'normal', // The initial filter (tagged,starred)
showSentences: 5, /* The minimum number of sentences to
* present
*/
lineHeight: -1, /* The height of a single line
* (measured in renderXml() if -1);
*/
useColor: false, // Color sentences based upon rank?
rankOpacity: 0.3, // The default opacity for rank items
animSpeed: 200 // Speed (in ms) of animations
},
/** @brief Initialize this new instance.
* @param el The jQuery DOM element.
* @param options Initialization options.
*
* @return this for a fluent interface.
*/
init: function(el, options) {
var self = this;
var opts = $.extend(true, {}, self.options, options);
self.element = el;
self.options = opts;
self.metadata = null;
self.starred = [];
self.notes = [];
var $gp = self.element.parent().parent();
self.$control = $gp.find('.control-pane');
self.$notes = $gp.find('.notes-pane');
self.$threshold = self.$control.find('.threshold');
self.$thresholdValues = self.$threshold.find('.values');
// Initialize any widgets
self.$buttons = self.$control.find('.buttons button').button();
self.$filters = self.$control.find('.filter :checkbox');
self.$control.find('.buttons .expansion').buttonset();
//self.$control.find('.buttons .global').buttonset();
var $tagged = self.$filters.filter('#filter-tagged');
var $starred = self.$filters.filter('#filter-starred');
$tagged.checkbox({
cssOn: 'su-icon su-icon-tag-blue',
cssOff: 'su-icon su-icon-tag',
titleOn: 'click to remove filter',
titleOff: 'click to filter',
hideLabel: true
});
$starred.checkbox({
cssOn: 'su-icon su-icon-star-blue',
cssOff: 'su-icon su-icon-star',
titleOn: 'click to remove filter',
titleOff: 'click to filter',
hideLabel: true
});
self.$control.show();
rangy.init();
self.cssTag = rangy.createCssClassApplier(
'ui-state-default tagged', {
normalize: true,
elementTagName: 'em'
});
self.cssSelect = rangy.createCssClassApplier('selected', {
normalize: true,
elementTagName: 'em'
});
// Bind events
self._bindEvents();
// Kick off the retrieval of the metadata
var getMetadata = $.get(opts.metadata);
self.element.addClass('loading');
getMetadata.done(function( data ) {
self.metadata = data;
// Perform the initial rendering of the xml
self.render();
self.element.removeClass('loading');
});
getMetadata.fail(function() {
alert("Cannot retrieve metadata '"+ opts.metadata +"'");
});
},
/** @brief Invoked to cleanup this widget. */
destroy: function() {
self._unbindEvents();
},
/** @brief Render the summary information over the main article.
*/
render: function() {
var self = this;
var opts = self.options;
// If we have NOT retrieved the XML meta-data, no rendering.
if (self.metadata === null) { return; }
// Retrieve the filter state for the current meta-data URL
var state = self._getState(opts.metadata);
var notes = [];
if (state)
{
opts.threshold.min = state.threshold.min;
opts.threshold.max = state.threshold.max;
opts.filter = state.filter;
self.starred = (state.starred ? state.starred : []);
if (state.notes) { notes = state.notes; }
}
// Renter the XML
self.renderXml( self.metadata );
// Find all sentences and bucket them based upon 'rank'
self.$p = self.element.find('p');
self.$s = self.$p.find('.sentence');
self.$kws = self.element.find('.keyword');
self.ranks = [];
self.$s.each(function() {
var $el = $(this);
var rank = parseInt($el.attr('rank'), 10);
if (isNaN(rank)) { return; }
if (self.ranks[rank] === undefined) { self.ranks[rank] = []; }
if (opts.useColor !== false)
{
// Adjust the color of the sentence based upon the rank
var base = (opts.useColor === true
? 221
: opts.useColor);
var red = base - Math.ceil( base * (rank / 100) );
var green = red;
var blue = red;
var color = 'rgb('+ red +','+ green +','+ blue +')';
$el.css({color:color});
}
self.ranks[rank].push($el);
});
var threshold = opts.threshold;
if ((opts.threshold.min < 0) || (opts.threshold.max < 0))
{
threshold = self._computeThreshold();
self.origThreshold = threshold;
}
// If there were previously starred sentences, mark them now
if (self.starred.length > 0)
{
// Remove any current star markings and apply those indicated by
// self.starred
self.$s.removeClass('starred');
$.each(self.starred, function(idex, val) {
if (val === true)
{
var $s = $( self.$s.get(idex) );
$s.addClass('starred');
}
});
}
// If there were previous tags, mark them now
if (notes.length > 0)
{
var nNotes = notes.length;
self._noPut = true;
for (var idex = 0; idex < nNotes; idex++)
{
var curNotes = notes[idex];
if (! curNotes) { continue; }
var notesInst = new $.Notes( curNotes );
var $tagged = self._addNotes( notesInst.getRange(),
notesInst,
true );
}
self._noPut = false;
}
/* Ensure the filter is properly set (without a refresh).
* The refresh will take place when we set the threshold.
*/
self._changeFilter(opts.filter, true);
self.threshold( threshold.min, threshold.max);
},
/** @brief Given XML content, convert it to stylable HTML.
* @param xml The XML to render.
*
*/
renderXml: function(xml) {
var self = this;
var opts = self.options;
var $xml = $( xml );
/* Convert the XML to HTML that can be styled.
*
* First, handle any <header>, adding a <header> element BEFORE this
* element.
*/
var $header = $('<header />').appendTo( self.element );
var $doc = $xml.find('document');
var src = $doc.attr('src');
if (src) { opts.src = src; }
$doc.children().each(function() {
var $el = $(this);
switch (this.nodeName)
{
case 'title':
var $h1 = $('<h1 />');
if (opts.src !== null)
{
var $a = $('<a />')
.attr('href', opts.src)
.text( $el.text() )
.appendTo($h1);
}
else
{
$h1.text( $el.text() );
}
$header.append( $h1 );
break;
case 'published':
var str = $el.find('date').text() +' '
+ $el.find('time').text();
var date = new Date(str);
var $time = $('<time />')
.attr('datetime', date.toISOString())
.attr('pubdate', true)
.text(str)
.appendTo($header);
break;
case 'keywords':
// Process any XML <keyword> elements
$('#tmpl-header-keywords')
.tmpl({ keywords: $el.find('keyword') })
.appendTo($header);
break;
case 'body':
// Process any XML <section> elements
$el.find('section').each(function() {
// Leave this for later
var $div = $('<section />')
.appendTo( self.element );
// Convert the XML <p> to an HTML <p>
$(this).find('p').each(function() {
var $p = $('<p />')
.appendTo($div);
// Convert the XML <s> to an HTML <div>
$(this).find('s').each(function() {
var $s = $(this);
var rank = parseFloat($s.attr('rank'));
if (isNaN(rank)) { rank = 0; }
/* Treat the rank as an integer percentile
* (0 .. 100).
*/
rank = parseInt(rank * 100, 10);
var $sEl = $('#tmpl-sentence')
.tmpl( {rank: rank} )
.appendTo($p);
var $sC = $sEl.find('.content');
$sEl.find('.rank')
.css('opacity', opts.rankOpacity);
// Assemble the HTML from the XML
$.each(this.childNodes, function() {
var $node = $(this);
switch (this.nodeName)
{
case 'w':
case '#text':
if ($node.attr('keyword'))
{
$('#tmpl-sentence-keyword')
.tmpl( {
keyword:$node.attr('keyword'),
text: $node.text()
} )
.appendTo( $sC );
}
else
{
$('#tmpl-sentence-text')
.tmpl( {
text: $node.text()
} )
.appendTo( $sC );
}
break;
case 'keyword':
$('#tmpl-sentence-keyword')
.tmpl( {
keyword:$node.attr('name'),
text: $node.text()
} )
.appendTo( $sC );
break;
}
});
if (opts.lineHeight < 1)
{
opts.lineHeight = $sEl.height();
}
});
});
});
break;
default:
$header.append( $el );
break;
}
});
},
/** @brief Change the rank threshold.
* @param min The minimum threshold.
* @param max The maximum threshold.
*/
threshold: function( min, max) {
var self = this;
var opts = self.options;
var isExpand = (min < opts.threshold.min);
// Update the threshold and threshold value presentation
opts.threshold.min = min;
opts.threshold.max = max;
self.refresh( isExpand );
},
/** @brief Refresh the presentation based upon the current filter and
* thresholds.
* @param isExpand Is this an
* expansion (true),
* contraction (false) or
* neither (undefined).
*
*/
refresh: function(isExpand) {
var self = this;
var opts = self.options;
var str = opts.threshold.min +' - ' + opts.threshold.max;
self.$thresholdValues.text( str );
/* Initially mark all sentences as 'NOT highlighted' and all
* paragraphs as 'NOT shown'
*/
self.$s.addClass('noHighlight');
if (opts.filter === 'normal')
{
// Show only sentences within the threshold range
for (var idex = opts.threshold.max;
idex >= opts.threshold.min;
idex--)
{
var ar = self.ranks[idex];
if (ar === undefined) { continue; }
var nItems = ar.length;
for (var jdex = 0; jdex < nItems; jdex++)
{
// Mark this sentence as TO BE highlighted
var $s = ar[jdex];
$s.addClass('toHighlight')
.removeClass('noHighlight');
}
}
}
else
{
if (opts.filter.indexOf('tagged') >= 0)
{
/* Show ALL sentences containing one or more tags regardless of
* threshold
*/
self.$s.filter( ':has(.tagged)' )
.addClass('toHighlight')
.removeClass('noHighlight');
}
if (opts.filter.indexOf('starred') >= 0)
{
// Show ALL starred sentences regardless of threshold
self.$s.filter( '.starred' )
.addClass('toHighlight')
.removeClass('noHighlight');
}
}
/* Hide expansion controls for sentences that have no siblings that
* would be expanded.
*/
self.$s.removeClass('hide-expand');
self.$p.each(function() {
var $p = $(this);
var $ss = $p.find('.sentence');
if ($ss.length === 1)
{
// Only one sentence period -- Always hide
$ss.addClass('hide-expand');
return;
}
$ss.each(function() {
var $s = $(this);
var $pS = $s.prev();
var $nS = $s.next();
if ($pS.length < 1)
{
// First sentence
if ($s.hasClass('noHighlight') || // is NOT highlighted
($nS.length < 1) || // No next
$nS.hasClass('toHighlight')) // Next is highlighted
{
$s.addClass('hide-expand');
}
}
else if ($nS.length < 1)
{
// Last sentence
if ($s.hasClass('noHighlight') || // is NOT highlighted
($pS.length < 1) || // No previous
$pS.hasClass('toHighlight')) // Prev is highlighted
{
$s.addClass('hide-expand');
}
}
else if ( $pS.hasClass('toHighlight') &&// Prev is highlighted
$nS.hasClass('toHighlight') ) // Next is highlighted
{
$s.addClass('hide-expand');
}
});
});
// Hide sentences
self.$s.filter('.noHighlight')
.removeClass('noHighlight highlight expanded expansion',
opts.animSpeed * 2,
function() {
var $s = $(this);
if ($s.data('isHighlighted'))
{
$s.younger( opts )
.removeData('isHighlighted');
}
// Hide any associated notes
self._syncNotesPosition( $s );
});
// Show sentences
self.$s.filter('.toHighlight')
.removeClass('toHighlight expanded expansion')
.addClass('highlight', opts.animSpeed * 2, function() {
var $s = $(this);
var wasHighlighted = $s.data('isHighlighted');
$s.data('isHighlighted', true);
// If the current senntence was already highlighted...
if (wasHighlighted)
{
// Already highlighted so we need to adjust the age
// expanding (older)
// contracting (younger)
if (isExpand === true)
{
// older
$s.older( opts );
}
else if (isExpand === false)
{
// younger
$s.younger( opts );
}
}
// Sync the position of associated notes
self._syncNotesPosition( $s );
});
self._putState();
},
/******************************************************************
* "Private" methods
*
*/
/** @brief Retrieve the current view state.
* @param url The URL to retrieve view state for [ opts.metadata ];
*/
_getState: function(url) {
var self = this;
var opts = self.options;
if (url === undefined) { url = opts.metadata; }
return $.jStorage.get(url);
},
/** @brief Store the current view state.
* @param url The URL to retrieve view state for [ opts.metadata ];
*/
_putState: function(url) {
var self = this;
var opts = self.options;
if (url === undefined) { url = opts.metadata; }
// Remember the current settings
var state = {
threshold: opts.threshold,
filter: opts.filter,
starred: self.starred,
notes: self.notes
};
$.jStorage.set(url, state);
},
/** @brief Compute the thresholds based upon opts.showSentences.
*
* @return The new threshold object {min: , max: }
*/
_computeThreshold: function() {
var self = this;
var opts = self.options;
var num = 0;
var threshold = {
min: -1,
max: 100
};
/* Find the highest rank that will include at least opts.showSentences
* sentences.
*/
for (var idex = self.ranks.length - 1; idex > 0; idex--)
{
var ar = self.ranks[idex];
if (ar === undefined) { continue; }
num += ar.length;
if (num > opts.showSentences)
{
threshold.min = Math.floor(idex / 10) * 10;
break;
}
}
return threshold;
},
/** @brief Given a jQuery DOM sentence element (.sentence), determine
* whether or not it is fully "visible".
* @param $s The jQuery DOM sentence element
*
* @return true | false
*/
_isVisible: function($s) {
return ($s.filter('.highlight,.expanded,.expansion,.keyworded')
.length > 0);
},
/** @brief Given a jQuery DOM sentence element (.sentence),
* turn ON the 'star' setting.
* @param $s The jQuery DOM sentence element
*
*/
_starOn: function($s) {
var self = this;
var opts = self.options;
// Locate the paragraph/sentence number
var sNum = self.$s.index($s);
$s.addClass('starred');
self.starred[sNum] = true;
return this;
},
/** @brief Given a jQuery DOM sentence element (.sentence),
* turn OFF the 'star' setting.
* @param $s The jQuery DOM sentence element
*
*/
_starOff: function($s) {
var self = this;
var opts = self.options;
// Locate the paragraph/sentence number
var sNum = self.$s.index($s);
$s.removeClass('starred');
self.starred[sNum] = false;
return this;
},
/** @brief Given a jQuery DOM sentence element (.sentence),
* toggle the 'star' setting.
* @param $s The jQuery DOM sentence element
*
*/
_toggleStar: function($s) {
var self = this;
// (un)Star this sentence
if ($s.hasClass('starred'))
{
self._starOff($s);
}
else
{
self._starOn($s);
}
return this;
},
/** @brief Sync the position of any notes associated with the provided
* sentence.
* @param $s The jQuery DOM element representing the target sentence.
*/
_syncNotesPosition: function($s) {
var self = this;
var opts = self.options;
var visible = self._isVisible($s);
$s.find('.tagged').each(function() {
var $tagged = $(this);
var $notes = $tagged.data('notes-associate');
if (! $notes)
{
$tagged.removeData('notes-associate');
$tagged.removeClass('.tagged');
return;
}
/* If the sentence containing this tagged item is visible, ensure
* that the associated note is visible (which will also adjust its
* position). Otherwise, hide the associated note.
*/
$notes.notes( (visible ? 'show' : 'hide') );
});
},
/** @brief For every "visible" sentence, ensure that any associated notes
* are properly positioned along side.
*/
_syncNotesPositions: function() {
var self = this;
var opts = self.options;
self.$s.each(function() {
self._syncNotesPosition( $(this) );
});
},
/** @brief Given a jQuery DOM sentence (.sentence), expand it.
* @param $s The jQuery DOM sentence element
*/
_expand: function($s) {
var self = this;
var opts = self.options;
var $p = $s.parents('p:first');
var $el = $s.find('.controls .expand');
var $prev = $s.prev();
var $next = $s.next();
var completionsNeeded = 1;
var expandDone = function() {
var $this = $(this);
$this.addClass('expansion');
$this.css('display', '');
$el.attr('title', 'collapse');
if ( --completionsNeeded < 1)
{
self._syncNotesPositions();
}
};
if ($s.data('isExpanding') || $s.hasClass('expanded'))
{
// Already (being) expanded
return;
}
// Mark this sentence as being expanded
$s.data('isExpanding', true);
$s.addClass('expanded', opts.animSpeed, expandDone);
// If the previous sibling is NOT visible...
if (! self._isVisible( $prev ) )
{
completionsNeeded++;
$prev.addClass('expansion', opts.animSpeed, expandDone);
}
// If the next sibling NOT is visible...
if (! self._isVisible( $next ) )
{
completionsNeeded++;
$next.addClass('expansion', opts.animSpeed, expandDone);
}
// Remove our marker indicating that this sentence is being expanded
$s.removeData('isExpanding');
return this;
},
/** @brief Given a jQuery DOM sentence (.sentence), collapse it.
* @param $s The jQuery DOM sentence element
*/
_collapse: function($s) {
var self = this;
var opts = self.options;
var $p = $s.parents('p:first');
var $el = $s.find('.controls .expand');
var $prev = $s.prev();
var $next = $s.next();
var completionsNeeded = 1;
var collapseDone = function() {
if ( --completionsNeeded > 0) { return; }
$s.removeClass('expansion');
if (! $s.hasClass('highlight'))
{
/* The target sentence is NOT highlighted, so ensure that
* sentence controls are hidden and NOT in "hover mode" and any
* selection controls are removed.
*/
$s.removeClass('ui-hover');
$s.find('.controls .su-icon').css('opacity', '');
$s.find('.selection-controls').remove();
}
// Change the expand/contract title back to "expand"
$el.attr('title', 'expand');
self._syncNotesPositions();
// Mark collapse completed
$s.removeData('isCollapsing');
};
var collapseExpansion = function($sib) {
completionsNeeded++;
$sib.removeClass('expansion', opts.animSpeed, collapseDone);
if ($sib.hasClass('expanded'))
{
self._collapse($sib);
}
};
if ($s.data('isCollapsing'))
{
// This sentence is already being collapsed
return;
}
if ($s.hasClass('expanded'))
{
$s.removeClass('expanded', opts.animSpeed);
}
else if (! $s.hasClass('expansion'))
{
return;
}
// Mark this sentence as being collapsed
$s.data('isCollapsing', true);
// If the previous sibling is visible...
if ($prev.hasClass('expansion'))
{
collapseExpansion($prev);
}
// If the next sibling is visible...
if ($next.hasClass('expansion'))
{
collapseExpansion($next);
}
collapseDone();
return this;
},
/** @brief Given a jQuery DOM sentence element (.sentence),
* toggle the expand/collapse setting.
* @param $s The jQuery DOM sentence element
*
*/
_toggleExpand: function($s) {
var self = this;
var opts = self.options;
var $el = $s.find('.controls .expand');
if ($s.hasClass('expanded'))
{
// Collapse
self._collapse($s);
}
else
{
// Expand
self._expand($s);
}
return this;
},
/** @brief Change the filter value.
* @param filter The new value ('normal', 'tagged', 'starred').
* @param noRefresh If true, do NOT perform a refresh.
*
* @return this for a fluent interface.
*/
_changeFilter: function(filter, noRefresh) {
var self = this;
var opts = self.options;
var $buttons = self.$control.find( '[name=threshold-up],'
+ '[name=threshold-down]');
var filters = (filter
? filter.split(/\s*,\s*/)
: [ 'normal' ]);
$.each(filters, function() {
switch (this.toString())
{
case 'tagged':
$buttons.button('disable');
break;
case 'starred':
$buttons.button('disable');
break;
case 'normal':
default:
filter = 'normal';
$buttons.button('enable');
self.$filters.checkbox('uncheck');
/*
self.$control.find('#filter-normal')
.attr('checked', true)
.button('refresh');
// */
break;
}
});
// Set the filter value
opts.filter = filter;
self.element.removeClass('starred tagged normal')
.addClass(filters.join(' '));
if (noRefresh !== true)
{
// Re-apply the current threshold
self.refresh();
}
return self;
},
/** @brief Given a rangy selection object, generate a corresponding
* summary range string.
* @param sel The rangy selection object. If not provided,
* retrieve the current rangy selection.
*
* @return A range string of the form 'ss/se:so,es/ee:eo'.
*/
_generateRange: function(sel) {
if (sel === undefined) { sel = rangy.getSelection(); }
var self = this;
var opts = self.options;
var ranges = sel.getAllRanges();
/* Compute the indices of the sentences, .text/.keyword
* children, and text offsents.
*/
var start = ranges[0];
var end = ranges[ ranges.length - 1];
/* A sentence range is the sentence index, child index,
* and offset in the form:
* si/ci:offset
*
* Grab the start and end sentence along with an array of
* sentences between the two.
*/
var $sStart = $(start.startContainer).parents('.sentence:first');
var $sEnd = $(end.endContainer).parents('.sentence:first');
var sRange = {
start: self.$s.index( $sStart ) +'/'
+ rangy.serializePosition(
start.startContainer,
start.startOffset,
$sStart.find('.content')[0]),
end: self.$s.index( $sEnd ) +'/'
+ rangy.serializePosition(
end.endContainer,
end.endOffset,
$sEnd.find('.content')[0])
};
console.log("_generateRange: "+ sRange.start +','+ sRange.end);
return sRange.start +','+ sRange.end;