/*
* 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)
*/
-
-// search_box_id -> Results object
+
+// search_box_id -> Results object
var os_map = {};
// cached data, url -> json_text
var os_cache = {};
var os_animation_min_step = 2;
// delay between steps (in ms)
var os_animation_delay = 30;
-// max width of container in percent of normal size (1 == 100%)
+// max width of container in percent of normal size (1 == 100%)
var os_container_max_width = 2;
// currently active animation timer
var os_animation_timer = null;
-/** Timeout timer class that will fetch the results */
+/** Timeout timer class that will fetch the results */
function os_Timer(id,r,query){
this.id = id;
this.r = r;
- this.query = query;
+ this.query = query;
}
/** Timer user to animate expansion/contraction of container width */
}
/** Property class for single search box */
-function os_Results(name, formname){
+function os_Results(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.query = null; // last processed query
this.results = null; // parsed titles
this.resultCount = 0; // number of results
- this.original = null; // query that user entered
+ this.original = null; // query that user entered
this.selected = -1; // which result is selected
- this.containerCount = 0; // number of results visible in container
+ 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
c.scrollTop = 0;
c.style.visibility = "visible";
r.visible = true;
- }
+ }
}
function os_operaWidthFix(x){
// TODO: better css2 incompatibility detection here
if(is_opera || is_khtml || navigator.userAgent.toLowerCase().indexOf('firefox/1')!=-1){
return 30; // opera&konqueror & old firefox don't understand overflow-x, estimate scrollbar width
- }
+ }
return 0;
}
function os_createContainer(r){
var c = document.createElement("div");
var s = document.getElementById(r.searchbox);
- var pos = os_getElementPosition(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
+ 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); };
}
/** change container height to fit to screen */
-function os_fitContainer(r){
+function os_fitContainer(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;
+ h = 2 * inc;
if((h/inc) > os_max_lines_per_suggest )
h = inc * os_max_lines_per_suggest;
if(h < r.containerTotal){
}
var w = document.getElementById(r.container).offsetWidth;
var fix = 0;
- if(r.containerCount < r.resultCount){
- fix = 20; // give 20px for scrollbar
+ 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
+
+ // 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 ){
+ var newW = Math.round( normW * prop );
+ if( w != newW ){
w = newW;
if( os_animation_timer != null )
clearInterval(os_animation_timer.id)
os_animation_timer.id = setInterval("os_animateChangeWidth()",os_animation_delay);
w -= fix; // this much is reserved
}
-
+
// trim results
if(w < 10)
return;
while(e.offsetWidth > w && (e.offsetWidth < lastW || iteration<2)){
changedText = true;
lastW = e.offsetWidth;
- var l = e.innerHTML;
+ var l = e.innerHTML;
e.innerHTML = l.substring(0,l.length-replace)+"...";
iteration++;
replace = 4; // how many chars to replace
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;
} 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";
}
}
/** Handles data from XMLHttpRequest, and updates the suggest results */
-function os_updateResults(r, query, text, cacheKey){
+function os_updateResults(r, query, text, cacheKey){
os_cache[cacheKey] = text;
r.query = query;
r.original = query;
r.results = null;
r.resultCount = 0;
os_hideResults(r);
- } else{
+ } else{
try {
var p = eval('('+text+')'); // simple json parse, could do a safer one
if(p.length<2 || p[1].length == 0){
r.resultCount = 0;
os_hideResults(r);
return;
- }
+ }
var c = document.getElementById(r.container);
if(c == null)
- c = os_createContainer(r);
+ c = os_createContainer(r);
c.innerHTML = os_createResultTable(r,p[1]);
// init container table sizes
- var t = document.getElementById(r.resultTable);
- r.containerTotal = t.offsetHeight;
+ var t = document.getElementById(r.resultTable);
+ r.containerTotal = t.offsetHeight;
r.containerRow = t.offsetHeight / r.resultCount;
os_fitContainer(r);
- os_trimResultText(r);
+ os_trimResultText(r);
os_showResults(r);
} catch(e){
// bad response from server or such
- os_hideResults(r);
+ os_hideResults(r);
os_cache[cacheKey] = null;
}
- }
+ }
}
/** Create the result table to be placed in the container div */
function os_createResultTable(r, results){
var c = document.getElementById(r.container);
- var width = c.offsetWidth - os_operaWidthFix(c.offsetWidth);
+ var width = c.offsetWidth - os_operaWidthFix(c.offsetWidth);
var html = "<table class=\"os-suggest-results\" id=\""+r.resultTable+"\" style=\"width: "+width+"px;\">";
r.results = new Array();
r.resultCount = results.length;
/** Fetch namespaces from checkboxes or hidden fields in the search form,
if none defined use wgSearchNamespaces global */
-function os_getNamespaces(r){
+function os_getNamespaces(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)
+ 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+="|";
/** Update results if user hasn't already typed something else */
function os_updateIfRelevant(r, query, text, cacheKey){
var t = document.getElementById(r.searchbox);
- if(t != null && t.value == query){ // check if response is still relevant
+ if(t != null && t.value == query){ // check if response is still relevant
os_updateResults(r, query, text, cacheKey);
}
r.query = query;
var path = wgMWSuggestTemplate.replace("{namespaces}",os_getNamespaces(r))
.replace("{dbname}",wgDBname)
.replace("{searchTerms}",os_encodeQuery(query));
-
+
// try to get from cache, if not fetch using ajax
var cached = os_cache[path];
if(cached != null){
os_updateIfRelevant(r, query, cached, path);
- } else{
+ } else{
var xmlhttp = sajax_init_object();
if(xmlhttp){
- try {
+ try {
xmlhttp.open("GET", path, true);
xmlhttp.onreadystatechange=function(){
- if (xmlhttp.readyState==4 && typeof os_updateIfRelevant == 'function') {
+ if (xmlhttp.readyState==4 && typeof os_updateIfRelevant == 'function') {
os_updateIfRelevant(r, query, xmlhttp.responseText, path);
}
};
- xmlhttp.send(null);
+ 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.");
return;
} else if(query == r.query)
return; // no change
-
+
os_is_stopped = false; // make sure we're running
-
- /* var cacheKey = wgDBname+":"+query;
+
+ /* var cacheKey = wgDBname+":"+query;
var cached = os_cache[cacheKey];
if(cached != null){
os_updateResults(r,wgDBname,query,cached);
return;
} */
-
+
// cancel any pending fetches
if(os_timer != null && os_timer.id != null)
clearTimeout(os_timer.id);
- // schedule delayed fetching of results
+ // schedule delayed fetching of results
if(timeout != 0){
os_timer = new os_Timer(setTimeout("os_delayedFetch()",timeout),r,query);
- } else{
+ } else{
os_timer = new os_Timer(null,r,query);
os_delayedFetch(); // do it now!
}
if (next >= r.resultCount)
next = r.resultCount-1;
if (next < -1)
- 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)
newText = r.results[next];
} else
newText = r.original;
-
+
// adjust the scrollbar if any
if(r.containerCount < r.resultCount){
var c = document.getElementById(r.container);
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);
+ os_updateSearchQuery(r,newText);
}
}
/********************
- * Keyboard events
- ********************/
+ * Keyboard events
+ ********************/
/** Event handler that will fetch results on keyup */
function os_eventKeyup(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
+
+ // some browsers won't generate keypressed for arrow keys, catch it
if(os_keypressed_count == 0){
os_processKey(r,os_cur_keypressed,targ);
}
/** catch arrows up/down and escape to hide the suggestions */
function os_processKey(r,keypressed,targ){
if (keypressed == 40){ // Arrow Down
- if (r.visible) {
- os_changeHighlight(r, r.selected, r.selected+1, true);
+ if (r.visible) {
+ os_changeHighlight(r, r.selected, r.selected+1, true);
} else if(os_timer == null){
// user wants to get suggestions now
r.query = "";
}
/** When keys is held down use a timer to output regular events */
-function os_eventKeypress(e){
+function os_eventKeypress(e){
var targ = os_getTarget(e);
var r = os_map[targ.id];
if(r == null)
return; // not our event
-
+
var keypressed = os_cur_keypressed;
if(keypressed == 38 || keypressed == 40){
var d = new Date()
return;
}
}
-
+
os_keypressed_count++;
os_processKey(r,keypressed,targ);
}
var r = os_map[targ.id];
if(r == null)
return; // not our event
-
+
os_mouse_moved = false;
os_cur_keypressed = (window.Event) ? e.which : e.keyCode;
}
/** Event: loss of focus of input box */
-function os_eventBlur(e){
+function os_eventBlur(e){
var targ = os_getTarget(e);
var r = os_map[targ.id];
if(r == null)
return; // not our event
- if(!os_mouse_pressed)
+ if(!os_mouse_pressed)
os_hideResults(r);
}
/********************
- * Mouse events
- ********************/
+ * Mouse events
+ ********************/
/** Mouse over the container */
function os_eventMouseover(srcId, e){
- var targ = os_getTarget(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) */
if(r == null)
return; // not our event
var num = os_getNumberSuffix(targ.id);
-
+
os_mouse_pressed = true;
if(num >= 0){
os_mouse_num = num;
}
// keep the focus on the search field
document.getElementById(r.searchbox).focus();
-
+
return false; // prevents selection
}
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);
var r = os_map[os_autoload_inputs[i]];
if(r != null){
var b = document.getElementById(r.searchform);
- if(b != null && b == targ){
+ 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);
}
}
/** Init Result objects and event handlers */
function os_initHandlers(name, formname, element){
- var r = new os_Results(name, formname);
+ var r = new os_Results(name, formname);
// event handler
os_hookEvent(element, "keyup", function(event) { os_eventKeyup(event); });
os_hookEvent(element, "keydown", function(event) { os_eventKeydown(event); });
element.setAttribute("autocomplete","off");
// stopping handler
os_hookEvent(document.getElementById(formname), "submit", function(event){ return os_eventOnsubmit(event); });
- os_map[name] = r;
+ 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
+ // 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");
t.style.visibility = "visible";
} */
}
-
+
}
/** Return the span element that contains the toggle link */
var msg = document.createTextNode(wgMWSuggestMessages[0]);
link.appendChild(msg);
t.appendChild(link);
- return t;
+ return t;
}
/** Call when user clicks on some of the toggle links */
if(r == null){
os_enableSuggestionsOn(inputId,formName);
r = os_map[inputId];
- msg = wgMWSuggestMessages[0];
+ msg = wgMWSuggestMessages[0];
} else{
os_disableSuggestionsOn(inputId,formName);
msg = wgMWSuggestMessages[1];
os_hideResults(r);
// turn autocomplete on !
document.getElementById(inputId).setAttribute("autocomplete","on");
- // remove descriptor
+ // remove descriptor
os_map[inputId] = null;
}
}
element = document.getElementById( id );
if(element != null)
os_initHandlers(id,form,element);
- }
+ }
}
hookEvent("load", os_MWSuggestInit);
dépôts / lhc / web / wiklou.git / commitdiff