Your IP : 172.70.80.239
/*
* OpenSearch ajax suggestion engine for MediaWiki
*
* uses core MediaWiki open search support to fetch suggestions
* and show them below search boxes and other inputs
*
* by Robert Stojnic (April 2008)
*/
// Make sure wgMWSuggestTemplate is defined
if ( !mw.config.exists( 'wgMWSuggestTemplate' ) ) {
mw.config.set( 'wgMWSuggestTemplate', mw.config.get( 'wgServer' ) + mw.config.get( 'wgScriptPath' )
+ "/api.php?action=opensearch\x26search={searchTerms}\x26namespace={namespaces}\x26suggest" );
}
// search_box_id -> Results object
window.os_map = {};
// cached data, url -> json_text
window.os_cache = {};
// global variables for suggest_keypress
window.os_cur_keypressed = 0;
window.os_keypressed_count = 0;
// type: Timer
window.os_timer = null;
// tie mousedown/up events
window.os_mouse_pressed = false;
window.os_mouse_num = -1;
// if true, the last change was made by mouse (and not keyboard)
window.os_mouse_moved = false;
// delay between keypress and suggestion (in ms)
window.os_search_timeout = 250;
// these pairs of inputs/forms will be autoloaded at startup
window.os_autoload_inputs = ['searchInput', 'searchInput2', 'powerSearchText', 'searchText'];
window.os_autoload_forms = ['searchform', 'searchform2', 'powersearch', 'search'];
// if we stopped the service
window.os_is_stopped = false;
// max lines to show in suggest table
window.os_max_lines_per_suggest = 7;
// number of steps to animate expansion/contraction of container width
window.os_animation_steps = 6;
// num of pixels of smallest step
window.os_animation_min_step = 2;
// delay between steps (in ms)
window.os_animation_delay = 30;
// max width of container in percent of normal size (1 == 100%)
window.os_container_max_width = 2;
// currently active animation timer
window.os_animation_timer = null;
// whether MWSuggest is enabled. Set to false when os_MWSuggestDisable() is called
window.os_enabled = true;
/**
* <datalist> is a new HTML5 element that allows you to manually
* supply suggestion lists and have them rendered according to the
* right platform conventions. Opera as of version 11 has a fatal
* problem: the suggestion lags behind what the user types by one
* keypress. (Reported as DSK-276870 to Opera's secret bug tracker.)
* There are also problems with other browsers, including Firefox and
* Safari: See bug 31602 for details.
*/
window.os_use_datalist = false;
/** Timeout timer class that will fetch the results */
window.os_Timer = function( id, r, query ) {
this.id = id;
this.r = r;
this.query = query;
};
/** Property class for single search box */
window.os_Results = function( name, formname ) {
this.searchform = formname; // id of the searchform
this.searchbox = name; // id of the searchbox
this.container = name + 'Suggest'; // div that holds results
this.resultTable = name + 'Result'; // id base for the result table (+num = table row)
this.resultText = name + 'ResultText'; // id base for the spans within result tables (+num)
this.toggle = name + 'Toggle'; // div that has the toggle (enable/disable) link
this.query = null; // last processed query
this.results = null; // parsed titles
this.resultCount = 0; // number of results
this.original = null; // query that user entered
this.selected = -1; // which result is selected
this.containerCount = 0; // number of results visible in container
this.containerRow = 0; // height of result field in the container
this.containerTotal = 0; // total height of the container will all results
this.visible = false; // if container is visible
this.stayHidden = false; // don't try to show if lost focus
};
/** Timer user to animate expansion/contraction of container width */
window.os_AnimationTimer = function( r, target ) {
this.r = r;
var current = document.getElementById(r.container).offsetWidth;
this.inc = Math.round( ( target - current ) / os_animation_steps );
if( this.inc < os_animation_min_step && this.inc >=0 ) {
this.inc = os_animation_min_step; // minimal animation step
}
if( this.inc > -os_animation_min_step && this.inc < 0 ) {
this.inc = -os_animation_min_step;
}
this.target = target;
};
/******************
* Initialization
******************/
/** Initialization, call upon page onload */
window.os_MWSuggestInit = function() {
if ( !window.os_enabled ) {
return;
}
for( var i = 0; i < os_autoload_inputs.length; i++ ) {
var id = os_autoload_inputs[i];
var form = os_autoload_forms[i];
element = document.getElementById( id );
if( element != null ) {
os_initHandlers( id, form, element );
}
}
};
/* Teardown, called when things like SimpleSearch need to disable MWSuggest */
window.os_MWSuggestTeardown = function() {
for( var i = 0; i < os_autoload_inputs.length; i++ ) {
var id = os_autoload_inputs[i];
var form = os_autoload_forms[i];
element = document.getElementById( id );
if( element != null ) {
os_teardownHandlers( id, form, element );
}
}
};
/* Call this to disable MWSuggest. Works regardless of whether MWSuggest has been initialized already. */
window.os_MWSuggestDisable = function() {
window.os_MWSuggestTeardown();
window.os_enabled = false;
}
/** Init Result objects and event handlers */
window.os_initHandlers = function( name, formname, element ) {
var r = new os_Results( name, formname );
var formElement = document.getElementById( formname );
if( !formElement ) {
// Older browsers (Opera 8) cannot get form elements
return;
}
// event handler
os_hookEvent( element, 'keyup', os_eventKeyup );
os_hookEvent( element, 'keydown', os_eventKeydown );
os_hookEvent( element, 'keypress', os_eventKeypress );
if ( !os_use_datalist ) {
// These are needed for the div hack to hide it if the user blurs.
os_hookEvent( element, 'blur', os_eventBlur );
os_hookEvent( element, 'focus', os_eventFocus );
// We don't want browser auto-suggestions interfering with our div, but
// autocomplete must be on for datalist to work (at least in Opera
// 10.10).
element.setAttribute( 'autocomplete', 'off' );
}
// stopping handler
os_hookEvent( formElement, 'submit', os_eventOnsubmit );
os_map[name] = r;
// toggle link
if( document.getElementById( r.toggle ) == null ) {
// TODO: disable this while we figure out a way for this to work in all browsers
/* if( name == 'searchInput' ) {
// special case: place above the main search box
var t = os_createToggle( r, 'os-suggest-toggle' );
var searchBody = document.getElementById( 'searchBody' );
var first = searchBody.parentNode.firstChild.nextSibling.appendChild(t);
} else {
// default: place below search box to the right
var t = os_createToggle( r, 'os-suggest-toggle-def' );
var top = element.offsetTop + element.offsetHeight;
var left = element.offsetLeft + element.offsetWidth;
t.style.position = 'absolute';
t.style.top = top + 'px';
t.style.left = left + 'px';
element.parentNode.appendChild( t );
// only now width gets calculated, shift right
left -= t.offsetWidth;
t.style.left = left + 'px';
t.style.visibility = 'visible';
} */
}
};
window.os_teardownHandlers = function( name, formname, element ) {
var formElement = document.getElementById( formname );
if( !formElement ) {
// Older browsers (Opera 8) cannot get form elements
return;
}
os_unhookEvent( element, 'keyup', os_eventKeyup );
os_unhookEvent( element, 'keydown', os_eventKeydown );
os_unhookEvent( element, 'keypress', os_eventKeypress );
if ( !os_use_datalist ) {
// These are needed for the div hack to hide it if the user blurs.
os_unhookEvent( element, 'blur', os_eventBlur );
os_unhookEvent( element, 'focus', os_eventFocus );
// We don't want browser auto-suggestions interfering with our div, but
// autocomplete must be on for datalist to work (at least in Opera
// 10.10).
element.removeAttribute( 'autocomplete' );
}
// stopping handler
os_unhookEvent( formElement, 'submit', os_eventOnsubmit );
};
window.os_hookEvent = function( element, hookName, hookFunct ) {
if ( element.addEventListener ) {
element.addEventListener( hookName, hookFunct, false );
} else if ( window.attachEvent ) {
element.attachEvent( 'on' + hookName, hookFunct );
}
};
window.os_unhookEvent = function( element, hookName, hookFunct ) {
if ( element.removeEventListener ) {
element.removeEventListener( hookName, hookFunct, false );
} else if ( element.detachEvent ) {
element.detachEvent( 'on' + hookName, hookFunct );
}
}
/********************
* Keyboard events
********************/
/** Event handler that will fetch results on keyup */
window.os_eventKeyup = function( e ) {
var targ = os_getTarget( e );
var r = os_map[targ.id];
if( r == null ) {
return; // not our event
}
// some browsers won't generate keypressed for arrow keys, catch it
if( os_keypressed_count == 0 ) {
os_processKey( r, os_cur_keypressed, targ );
}
var query = targ.value;
os_fetchResults( r, query, os_search_timeout );
};
/** catch arrows up/down and escape to hide the suggestions */
window.os_processKey = function( r, keypressed, targ ) {
if ( keypressed == 40 && !r.visible && os_timer == null ) {
// If the user hits the down arrow, fetch results immediately if none
// are already displayed.
r.query = '';
os_fetchResults( r, targ.value, 0 );
}
// Otherwise, if we're not using datalist, we need to handle scrolling and
// so on.
if ( os_use_datalist ) {
return;
}
if ( keypressed == 40 ) { // Arrow Down
if ( r.visible ) {
os_changeHighlight( r, r.selected, r.selected + 1, true );
}
} else if ( keypressed == 38 ) { // Arrow Up
if ( r.visible ) {
os_changeHighlight( r, r.selected, r.selected - 1, true );
}
} else if( keypressed == 27 ) { // Escape
document.getElementById( r.searchbox ).value = r.original;
r.query = r.original;
os_hideResults( r );
} else if( r.query != document.getElementById( r.searchbox ).value ) {
// os_hideResults( r ); // don't show old suggestions
}
};
/** When keys is held down use a timer to output regular events */
window.os_eventKeypress = function( e ) {
var targ = os_getTarget( e );
var r = os_map[targ.id];
if( r == null ) {
return; // not our event
}
var keypressed = os_cur_keypressed;
os_keypressed_count++;
os_processKey( r, keypressed, targ );
};
/** Catch the key code (Firefox bug) */
window.os_eventKeydown = function( e ) {
if ( !e ) {
e = window.event;
}
var targ = os_getTarget( e );
var r = os_map[targ.id];
if( r == null ) {
return; // not our event
}
os_mouse_moved = false;
os_cur_keypressed = ( e.keyCode == undefined ) ? e.which : e.keyCode;
os_keypressed_count = 0;
};
/** When the form is submitted hide everything, cancel updates... */
window.os_eventOnsubmit = function( e ) {
var targ = os_getTarget( e );
os_is_stopped = true;
// kill timed requests
if( os_timer != null && os_timer.id != null ) {
clearTimeout( os_timer.id );
os_timer = null;
}
// Hide all suggestions
for( i = 0; i < os_autoload_inputs.length; i++ ) {
var r = os_map[os_autoload_inputs[i]];
if( r != null ) {
var b = document.getElementById( r.searchform );
if( b != null && b == targ ) {
// set query value so the handler won't try to fetch additional results
r.query = document.getElementById( r.searchbox ).value;
}
os_hideResults( r );
}
}
return true;
};
/** Hide results from the user, either making the div visibility=hidden or
* detaching the datalist from the input. */
window.os_hideResults = function( r ) {
if ( os_use_datalist ) {
document.getElementById( r.searchbox ).setAttribute( 'list', '' );
} else {
var c = document.getElementById( r.container );
if ( c != null ) {
c.style.visibility = 'hidden';
}
}
r.visible = false;
r.selected = -1;
};
window.os_decodeValue = function( value ) {
if ( decodeURIComponent ) {
return decodeURIComponent( value );
}
if( unescape ) {
return unescape( value );
}
return null;
};
window.os_encodeQuery = function( value ) {
if ( encodeURIComponent ) {
return encodeURIComponent( value );
}
if( escape ) {
return escape( value );
}
return null;
};
/** Handles data from XMLHttpRequest, and updates the suggest results */
window.os_updateResults = function( r, query, text, cacheKey ) {
os_cache[cacheKey] = text;
r.query = query;
r.original = query;
if( text == '' ) {
r.results = null;
r.resultCount = 0;
os_hideResults( r );
} else {
try {
var p = eval( '(' + text + ')' ); // simple json parse, could do a safer one
if( p.length < 2 || p[1].length == 0 ) {
r.results = null;
r.resultCount = 0;
os_hideResults( r );
return;
}
if ( os_use_datalist ) {
os_setupDatalist( r, p[1] );
} else {
os_setupDiv( r, p[1] );
}
} catch( e ) {
// bad response from server or such
os_hideResults( r );
os_cache[cacheKey] = null;
}
}
};
/**
* Create and populate a <datalist>.
*
* @param r os_Result object
* @param results Array of the new results to replace existing ones
*/
window.os_setupDatalist = function( r, results ) {
var s = document.getElementById( r.searchbox );
var c = document.getElementById( r.container );
if ( c == null ) {
c = document.createElement( 'datalist' );
c.setAttribute( 'id', r.container );
document.body.appendChild( c );
} else {
c.innerHTML = '';
}
s.setAttribute( 'list', r.container );
r.results = [];
r.resultCount = results.length;
r.visible = true;
for ( i = 0; i < results.length; i++ ) {
var title = os_decodeValue( results[i] );
var opt = document.createElement( 'option' );
opt.value = title;
r.results[i] = title;
c.appendChild( opt );
}
};
/** Fetch namespaces from checkboxes or hidden fields in the search form,
if none defined use wgSearchNamespaces */
window.os_getNamespaces = function( r ) {
var namespaces = '';
var elements = document.forms[r.searchform].elements;
for( i = 0; i < elements.length; i++ ) {
var name = elements[i].name;
if( typeof name != 'undefined' && name.length > 2 && name[0] == 'n' &&
name[1] == 's' && (
( elements[i].type == 'checkbox' && elements[i].checked ) ||
( elements[i].type == 'hidden' && elements[i].value == '1' )
)
) {
if( namespaces != '' ) {
namespaces += '|';
}
namespaces += name.substring( 2 );
}
}
if( namespaces == '' ) {
namespaces = mw.config.get( 'wgSearchNamespaces' ).join('|');
}
return namespaces;
};
/** Update results if user hasn't already typed something else */
window.os_updateIfRelevant = function( r, query, text, cacheKey ) {
var t = document.getElementById( r.searchbox );
if( t != null && t.value == query ) { // check if response is still relevant
os_updateResults( r, query, text, cacheKey );
}
r.query = query;
};
/** Fetch results after some timeout */
window.os_delayedFetch = function() {
if( os_timer == null ) {
return;
}
var r = os_timer.r;
var query = os_timer.query;
os_timer = null;
var path = mw.config.get( 'wgMWSuggestTemplate' ).replace( "{namespaces}", os_getNamespaces( r ) )
.replace( "{dbname}", mw.config.get( 'wgDBname' ) )
.replace( "{searchTerms}", os_encodeQuery( query ) );
// try to get from cache, if not fetch using ajax
var cached = os_cache[path];
if( cached != null && cached != undefined ) {
os_updateIfRelevant( r, query, cached, path );
} else {
var xmlhttp = sajax_init_object();
if( xmlhttp ) {
try {
xmlhttp.open( 'GET', path, true );
xmlhttp.onreadystatechange = function() {
if ( xmlhttp.readyState == 4 && typeof os_updateIfRelevant == 'function' ) {
os_updateIfRelevant( r, query, xmlhttp.responseText, path );
}
};
xmlhttp.send( null );
} catch ( e ) {
if ( window.location.hostname == 'localhost' ) {
alert( "Your browser blocks XMLHttpRequest to 'localhost', try using a real hostname for development/testing." );
}
throw e;
}
}
}
};
/** Init timed update via os_delayedUpdate() */
window.os_fetchResults = function( r, query, timeout ) {
if( query == '' ) {
r.query = '';
os_hideResults( r );
return;
} else if( query == r.query ) {
return; // no change
}
os_is_stopped = false; // make sure we're running
// cancel any pending fetches
if( os_timer != null && os_timer.id != null ) {
clearTimeout( os_timer.id );
}
// schedule delayed fetching of results
if( timeout != 0 ) {
os_timer = new os_Timer( setTimeout( "os_delayedFetch()", timeout ), r, query );
} else {
os_timer = new os_Timer( null, r, query );
os_delayedFetch(); // do it now!
}
};
/** Find event target */
window.os_getTarget = function( e ) {
if ( !e ) {
e = window.event;
}
if ( e.target ) {
return e.target;
} else if ( e.srcElement ) {
return e.srcElement;
} else {
return null;
}
};
/** Check if x is a valid integer */
window.os_isNumber = function( x ) {
if( x == '' || isNaN( x ) ) {
return false;
}
for( var i = 0; i < x.length; i++ ) {
var c = x.charAt( i );
if( !( c >= '0' && c <= '9' ) ) {
return false;
}
}
return true;
};
/** Call this to enable suggestions on input (id=inputId), on a form (name=formName) */
window.os_enableSuggestionsOn = function( inputId, formName ) {
os_initHandlers( inputId, formName, document.getElementById( inputId ) );
};
/** Call this to disable suggestios on input box (id=inputId) */
window.os_disableSuggestionsOn = function( inputId ) {
r = os_map[inputId];
if( r != null ) {
// cancel/hide results
os_timer = null;
os_hideResults( r );
// turn autocomplete on !
document.getElementById( inputId ).setAttribute( 'autocomplete', 'on' );
// remove descriptor
os_map[inputId] = null;
}
// Remove the element from the os_autoload_* arrays
var index = os_autoload_inputs.indexOf( inputId );
if ( index >= 0 ) {
os_autoload_inputs[index] = os_autoload_forms[index] = '';
}
};
/************************************************
* Div-only functions (irrelevant for datalist)
************************************************/
/** Event: loss of focus of input box */
window.os_eventBlur = function( e ) {
var targ = os_getTarget( e );
var r = os_map[targ.id];
if( r == null ) {
return; // not our event
}
if( !os_mouse_pressed ) {
os_hideResults( r );
// force canvas to stay hidden
r.stayHidden = true;
// cancel any pending fetches
if( os_timer != null && os_timer.id != null ) {
clearTimeout( os_timer.id );
}
os_timer = null;
}
};
/** Event: focus (catch only when stopped) */
window.os_eventFocus = function( e ) {
var targ = os_getTarget( e );
var r = os_map[targ.id];
if( r == null ) {
return; // not our event
}
r.stayHidden = false;
};
/**
* Create and populate a <div>, for non-<datalist>-supporting browsers.
*
* @param r os_Result object
* @param results Array of the new results to replace existing ones
*/
window.os_setupDiv = function( r, results ) {
var c = document.getElementById( r.container );
if ( c == null ) {
c = os_createContainer( r );
}
c.innerHTML = os_createResultTable( r, results );
// init container table sizes
var t = document.getElementById( r.resultTable );
r.containerTotal = t.offsetHeight;
r.containerRow = t.offsetHeight / r.resultCount;
os_fitContainer( r );
os_trimResultText( r );
os_showResults( r );
};
/** Create the result table to be placed in the container div */
window.os_createResultTable = function( r, results ) {
var c = document.getElementById( r.container );
var width = c.offsetWidth - os_operaWidthFix( c.offsetWidth );
var html = '<table class="os-suggest-results" id="' + r.resultTable + '" style="width: ' + width + 'px;">';
r.results = [];
r.resultCount = results.length;
for( i = 0; i < results.length; i++ ) {
var title = os_decodeValue( results[i] );
r.results[i] = title;
html += '<tr><td class="os-suggest-result" id="' + r.resultTable + i + '"><span id="' + r.resultText + i + '">' + title + '</span></td></tr>';
}
html += '</table>';
return html;
};
/** Show results div */
window.os_showResults = function( r ) {
if( os_is_stopped ) {
return;
}
if( r.stayHidden ) {
return;
}
os_fitContainer( r );
var c = document.getElementById( r.container );
r.selected = -1;
if( c != null ) {
c.scrollTop = 0;
c.style.visibility = 'visible';
r.visible = true;
}
};
window.os_operaWidthFix = function( x ) {
// For browsers that don't understand overflow-x, estimate scrollbar width
if( typeof document.body.style.overflowX != 'string' ) {
return 30;
}
return 0;
};
/** Brower-dependent functions to find window inner size, and scroll status */
window.f_clientWidth = function() {
return f_filterResults(
window.innerWidth ? window.innerWidth : 0,
document.documentElement ? document.documentElement.clientWidth : 0,
document.body ? document.body.clientWidth : 0
);
};
window.f_clientHeight = function() {
return f_filterResults(
window.innerHeight ? window.innerHeight : 0,
document.documentElement ? document.documentElement.clientHeight : 0,
document.body ? document.body.clientHeight : 0
);
};
window.f_scrollLeft = function() {
return f_filterResults(
window.pageXOffset ? window.pageXOffset : 0,
document.documentElement ? document.documentElement.scrollLeft : 0,
document.body ? document.body.scrollLeft : 0
);
};
window.f_scrollTop = function() {
return f_filterResults(
window.pageYOffset ? window.pageYOffset : 0,
document.documentElement ? document.documentElement.scrollTop : 0,
document.body ? document.body.scrollTop : 0
);
};
window.f_filterResults = function( n_win, n_docel, n_body ) {
var n_result = n_win ? n_win : 0;
if ( n_docel && ( !n_result || ( n_result > n_docel ) ) ) {
n_result = n_docel;
}
return n_body && ( !n_result || ( n_result > n_body ) ) ? n_body : n_result;
};
/** Get the height available for the results container */
window.os_availableHeight = function( r ) {
var absTop = document.getElementById( r.container ).style.top;
var px = absTop.lastIndexOf( 'px' );
if( px > 0 ) {
absTop = absTop.substring( 0, px );
}
return f_clientHeight() - ( absTop - f_scrollTop() );
};
/** Get element absolute position {left,top} */
window.os_getElementPosition = function( elemID ) {
var offsetTrail = document.getElementById( elemID );
var offsetLeft = 0;
var offsetTop = 0;
while ( offsetTrail ) {
offsetLeft += offsetTrail.offsetLeft;
offsetTop += offsetTrail.offsetTop;
offsetTrail = offsetTrail.offsetParent;
}
if ( navigator.userAgent.indexOf('Mac') != -1 && typeof document.body.leftMargin != 'undefined' ) {
offsetLeft += document.body.leftMargin;
offsetTop += document.body.topMargin;
}
return { left:offsetLeft, top:offsetTop };
};
/** Create the container div that will hold the suggested titles */
window.os_createContainer = function( r ) {
var c = document.createElement( 'div' );
var s = document.getElementById( r.searchbox );
var pos = os_getElementPosition( r.searchbox );
var left = pos.left;
var top = pos.top + s.offsetHeight;
c.className = 'os-suggest';
c.setAttribute( 'id', r.container );
document.body.appendChild( c );
// dynamically generated style params
// IE workaround, cannot explicitely set "style" attribute
c = document.getElementById( r.container );
c.style.top = top + 'px';
c.style.left = left + 'px';
c.style.width = s.offsetWidth + 'px';
// mouse event handlers
c.onmouseover = function( event ) { os_eventMouseover( r.searchbox, event ); };
c.onmousemove = function( event ) { os_eventMousemove( r.searchbox, event ); };
c.onmousedown = function( event ) { return os_eventMousedown( r.searchbox, event ); };
c.onmouseup = function( event ) { os_eventMouseup( r.searchbox, event ); };
return c;
};
/** change container height to fit to screen */
window.os_fitContainer = function( r ) {
var c = document.getElementById( r.container );
var h = os_availableHeight( r ) - 20;
var inc = r.containerRow;
h = parseInt( h / inc ) * inc;
if( h < ( 2 * inc ) && r.resultCount > 1 ) { // min: two results
h = 2 * inc;
}
if( ( h / inc ) > os_max_lines_per_suggest ) {
h = inc * os_max_lines_per_suggest;
}
if( h < r.containerTotal ) {
c.style.height = h + 'px';
r.containerCount = parseInt( Math.round( h / inc ) );
} else {
c.style.height = r.containerTotal + 'px';
r.containerCount = r.resultCount;
}
};
/** If some entries are longer than the box, replace text with "..." */
window.os_trimResultText = function( r ) {
// find max width, first see if we could expand the container to fit it
var maxW = 0;
for( var i = 0; i < r.resultCount; i++ ) {
var e = document.getElementById( r.resultText + i );
if( e.offsetWidth > maxW ) {
maxW = e.offsetWidth;
}
}
var w = document.getElementById( r.container ).offsetWidth;
var fix = 0;
if( r.containerCount < r.resultCount ) {
fix = 20; // give 20px for scrollbar
} else {
fix = os_operaWidthFix( w );
}
if( fix < 4 ) {
fix = 4; // basic padding
}
maxW += fix;
// resize container to fit more data if permitted
var normW = document.getElementById( r.searchbox ).offsetWidth;
var prop = maxW / normW;
if( prop > os_container_max_width ) {
prop = os_container_max_width;
} else if( prop < 1 ) {
prop = 1;
}
var newW = Math.round( normW * prop );
if( w != newW ) {
w = newW;
if( os_animation_timer != null ) {
clearInterval( os_animation_timer.id );
}
os_animation_timer = new os_AnimationTimer( r, w );
os_animation_timer.id = setInterval( "os_animateChangeWidth()", os_animation_delay );
w -= fix; // this much is reserved
}
// trim results
if( w < 10 ) {
return;
}
for( var i = 0; i < r.resultCount; i++ ) {
var e = document.getElementById( r.resultText + i );
var replace = 1;
var lastW = e.offsetWidth + 1;
var iteration = 0;
var changedText = false;
while( e.offsetWidth > w && ( e.offsetWidth < lastW || iteration < 2 ) ) {
changedText = true;
lastW = e.offsetWidth;
var l = e.innerHTML;
e.innerHTML = l.substring( 0, l.length - replace ) + '...';
iteration++;
replace = 4; // how many chars to replace
}
if( changedText ) {
// show hint for trimmed titles
document.getElementById( r.resultTable + i ).setAttribute( 'title', r.results[i] );
}
}
};
/** Invoked on timer to animate change in container width */
window.os_animateChangeWidth = function() {
var r = os_animation_timer.r;
var c = document.getElementById( r.container );
var w = c.offsetWidth;
var normW = document.getElementById( r.searchbox ).offsetWidth;
var normL = os_getElementPosition( r.searchbox ).left;
var inc = os_animation_timer.inc;
var target = os_animation_timer.target;
var nw = w + inc;
if( ( inc > 0 && nw >= target ) || ( inc <= 0 && nw <= target ) ) {
// finished !
c.style.width = target + 'px';
clearInterval( os_animation_timer.id );
os_animation_timer = null;
} else {
// in-progress
c.style.width = nw + 'px';
if( document.documentElement.dir == 'rtl' ) {
c.style.left = ( normL + normW + ( target - nw ) - os_animation_timer.target - 1 ) + 'px';
}
}
};
/** Change the highlighted row (i.e. suggestion), from position cur to next */
window.os_changeHighlight = function( r, cur, next, updateSearchBox ) {
if ( next >= r.resultCount ) {
next = r.resultCount - 1;
}
if ( next < -1 ) {
next = -1;
}
r.selected = next;
if ( cur == next ) {
return; // nothing to do.
}
if( cur >= 0 ) {
var curRow = document.getElementById( r.resultTable + cur );
if( curRow != null ) {
curRow.className = 'os-suggest-result';
}
}
var newText;
if( next >= 0 ) {
var nextRow = document.getElementById( r.resultTable + next );
if( nextRow != null ) {
nextRow.className = os_HighlightClass();
}
newText = r.results[next];
} else {
newText = r.original;
}
// adjust the scrollbar if any
if( r.containerCount < r.resultCount ) {
var c = document.getElementById( r.container );
var vStart = c.scrollTop / r.containerRow;
var vEnd = vStart + r.containerCount;
if( next < vStart ) {
c.scrollTop = next * r.containerRow;
} else if( next >= vEnd ) {
c.scrollTop = ( next - r.containerCount + 1 ) * r.containerRow;
}
}
// update the contents of the search box
if( updateSearchBox ) {
os_updateSearchQuery( r, newText );
}
};
window.os_HighlightClass = function() {
var match = navigator.userAgent.match(/AppleWebKit\/(\d+)/);
if ( match ) {
var webKitVersion = parseInt( match[1] );
if ( webKitVersion < 523 ) {
// CSS system highlight colors broken on old Safari
// https://bugs.webkit.org/show_bug.cgi?id=6129
// Safari 3.0.4, 3.1 known ok
return 'os-suggest-result-hl-webkit';
}
}
return 'os-suggest-result-hl';
};
window.os_updateSearchQuery = function( r, newText ) {
document.getElementById( r.searchbox ).value = newText;
r.query = newText;
};
/********************
* Mouse events
********************/
/** Mouse over the container */
window.os_eventMouseover = function( srcId, e ) {
var targ = os_getTarget( e );
var r = os_map[srcId];
if( r == null || !os_mouse_moved ) {
return; // not our event
}
var num = os_getNumberSuffix( targ.id );
if( num >= 0 ) {
os_changeHighlight( r, r.selected, num, false );
}
};
/* Get row where the event occured (from its id) */
window.os_getNumberSuffix = function( id ) {
var num = id.substring( id.length - 2 );
if( !( num.charAt( 0 ) >= '0' && num.charAt( 0 ) <= '9' ) ) {
num = num.substring( 1 );
}
if( os_isNumber( num ) ) {
return parseInt( num );
} else {
return -1;
}
};
/** Save mouse move as last action */
window.os_eventMousemove = function( srcId, e ) {
os_mouse_moved = true;
};
/** Mouse button held down, register possible click */
window.os_eventMousedown = function( srcId, e ) {
var targ = os_getTarget( e );
var r = os_map[srcId];
if( r == null ) {
return; // not our event
}
var num = os_getNumberSuffix( targ.id );
os_mouse_pressed = true;
if( num >= 0 ) {
os_mouse_num = num;
// os_updateSearchQuery( r, r.results[num] );
}
// keep the focus on the search field
document.getElementById( r.searchbox ).focus();
return false; // prevents selection
};
/** Mouse button released, check for click on some row */
window.os_eventMouseup = function( srcId, e ) {
var targ = os_getTarget( e );
var r = os_map[srcId];
if( r == null ) {
return; // not our event
}
var num = os_getNumberSuffix( targ.id );
if( num >= 0 && os_mouse_num == num ) {
os_updateSearchQuery( r, r.results[num] );
os_hideResults( r );
document.getElementById( r.searchform ).submit();
}
os_mouse_pressed = false;
// keep the focus on the search field
document.getElementById( r.searchbox ).focus();
};
/** Toggle stuff seems to be dead code? */
/** Return the span element that contains the toggle link */
window.os_createToggle = function( r, className ) {
var t = document.createElement( 'span' );
t.className = className;
t.setAttribute( 'id', r.toggle );
var link = document.createElement( 'a' );
link.setAttribute( 'href', 'javascript:void(0);' );
link.onclick = function() { os_toggle( r.searchbox, r.searchform ); };
var msg = document.createTextNode( wgMWSuggestMessages[0] );
link.appendChild( msg );
t.appendChild( link );
return t;
};
/** Call when user clicks on some of the toggle links */
window.os_toggle = function( inputId, formName ) {
r = os_map[inputId];
var msg = '';
if( r == null ) {
os_enableSuggestionsOn( inputId, formName );
r = os_map[inputId];
msg = wgMWSuggestMessages[0];
} else{
os_disableSuggestionsOn( inputId, formName );
msg = wgMWSuggestMessages[1];
}
// change message
var link = document.getElementById( r.toggle ).firstChild;
link.replaceChild( document.createTextNode( msg ), link.firstChild );
};
hookEvent( 'load', os_MWSuggestInit );