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(function(){
if(typeof BX.ui != 'object')
BX.ui = {};
//////////////////////////////
// generic autocomplete
//////////////////////////////
/*
todo: implement handling selectbox in the role of target input
todo: take care about the situation when BX.ajax() cannot handle request in time, and user presses enter or somehow else input looses focus
todo: make connection between origin and fake inputs, handling: change
todo: do ajax call interruption if it cannot handle request in time, but there is another newly typed request came and pending
*/
BX.ui.autoComplete = function(opts, nf){
this.parentConstruct(BX.ui.autoComplete, opts);
BX.merge(this, {
opts: { // default options
source: '/somewhere.php', // url that will be used to obtain select options from
pageSize: 20, // amount of variants to show
paginatedRequest: true, // if true, parameters for server-side paginator will be sent in the request
// behaviour
autoSelectOnBlur: false, // if true, plugin will select first item in variant list when input looses focus
autoSelectOnTab: false, // if true, plugin will select first item in variant list when user types tab button on fake input with string being incomplete typed in
autoSelectOnlyIfOneVariant: false,
selectOnEnter: true, // item can be selected by pressing Enter on it
selectByClick: true, // item can be selected by clicking on it
chooseUsingArrows: true, // item can be choosable when user presses arrow up\down while input is in focus
scrollToVariantOnArrow: true,
closePopupOnOuterClick: true, // if true, popup will be closed when user clicks outside the widget
focusOnMouseSelect: true, // if true, plugin will return focus to the fake input after user selects item using mouse. it allows not to lose tabindex order
autoSelectIfOneVariant: false, // if true, and only one variant found for currently typed query, it will be selected without any dropdown shown
debounceTime: 500, // time of reaction on input content change. Should not be too small
startSearchLen: 2, // minimum string length search will start with
knownItems: [], // already known items which go directly to the cache
selectedItem: false, // initially selected item VALUE
useCache: true, // always should be true, behaviour when useCache == false is not implemented
usePagingOnScroll: false, // if true, showing items on pane scroll will be used. Note that you must specify also paneHConstraint option, or have popup height limited in your css. Otherwise you will be wondered with the result :)
useCustomScrollPane: false, // always false, the developing of a custom scroll panel were frozen currently
scrollThrottleTimeout: 300, // timeout of reaction on pane scroll. Should not be too small
paneHConstraint: 0, // limit pane height with this value, if greather than zero
// language-dependent messages to display
messages: {
nothingFound: 'Sorry, nothing found',
error: 'Error occured',
clearSelection: 'Clear selection'
},
// magic design-related values
arrowScrollAdditional: 0,
pageUpWardOffset: 0,
wrapTagName: 'span',
paneHConstraintType: 'max-height', // constraint type of pane height
wrapSeparate: true,
bindEvents: {
'init': function(){ // after all we do this
this.setInitialValue();
this.vars.allowHideErrors = true;
}
}
},
vars: { // significant variables
opened: false, // whether dropdown is opened or not
eventLock: false, // when we fire 'change' on the target node, we dont want our own callback to be called
displayPageMutex: false,
blockingCall: false,
keyboardMutex: false,
cache: { // item cache
nodes: {}, // data index, keeps data for each node ever loaded
search: {}, // cache for request: map from query string to a set of items in responce. Here pagenavigation can be implemented without a trouble
ceilings: {}
},
lastQuery: null,
lastPage: 0,
displayedIndex: [],
value: false, // actually, [VALUE,DISPLAY] pair id
currentGlow: false, // item that is currently highlighted by arrow-up\down keys
previousGlow: false, // previous value of currentGlow
outSideClickScope: null,
forceSelectSingeOnce: false,
allowHideErrors: false
},
ctrls: { // links to controls
displayedItems: {},
popup: null
},
sys: {
code: 'autocomplete'
}
});
this.handleInitStack(nf, BX.ui.autoComplete, opts);
};
BX.extend(BX.ui.autoComplete, BX.ui.widget);
// the following functions can be overrided with inheritance
BX.merge(BX.ui.autoComplete.prototype, {
// member of stack of initializers, must be defined even if do nothing
init: function(){
var ctx = this,
so = this.opts,
sv = this.vars,
sc = this.ctrls;
// find input
var input = this.getControl('input', true);
if(input == null)
input = sc.scope.querySelector('input[type="text"]');
if(input == null)
input = sc.scope.querySelector('select');
if(input == null)
throw new Error('Input control still not found');
sc.inputs = {
origin: input == null ? sc.scope : input
};
sv.loader = new BX.ui.loader({
timeout: 500
});
sv.loader.bindEvent('toggle', BX.proxy(this.whenLoaderToggle, ctx));
if(sc.inputs.origin.nodeName == 'SELECT'){
throw new Error('Sorry, usage of <select> node as a source currently is not implemented');
// todo: get knownItems from sc.inputs.origin options (and also so.selectedItem)
}
if(typeof so.knownItems == 'object')
this.fillCache(so.knownItems, false);
this.pushFuncStack('buildUpDOM', BX.ui.autoComplete);
this.pushFuncStack('bindEvents', BX.ui.autoComplete);
},
buildUpDOM: function(){
var so = this.opts,
sc = this.ctrls,
sv = this.vars,
code = this.sys.code;
// add container node
sc.container = BX.create('div', {
props: {
className: 'bx-ui-'+code+'-container'
},
style: {
margin: 0,
padding: 0,
border: 'none',
position: 'relative'
}
});
//BX.style(sc.container, 'display', BX.style(sc.inputs.origin, 'display'));
BX.insertAfter(sc.container, sc.inputs.origin);
// clone input node
var pseudoInput = BX.clone(sc.inputs.origin);
pseudoInput.removeAttribute('name'); // make it invisible for form
BX.adjust(pseudoInput, {
props: {
className: 'bx-ui-'+code+'-fake'
}
});
sc.container.appendChild(pseudoInput);
sc.inputs.fake = pseudoInput;
/*
if(sv.value !== false)
{
console.dir('set from input');
//this.selectItem(sv.value);
this.setFakeInputValue(sv.cache.nodes[sv.value].DISPLAY);
}
else
this.setFakeInputValue('');
*/
// hide origin input
BX.hide(sc.inputs.origin);
//sc.inputs.origin.setAttribute('type', 'hidden');
if(BX.browser.IsIE8()){
BX.bind(sc.inputs.fake, 'click', function(e){
BX.eventCancelBubble(e);
});
BX.bind(sc.container, 'click', function(){
sc.inputs.fake.focus();
});
}
// clear handle
sc.clear = this.getControl('clear', true);
if(!BX.type.isElementNode(sc.clear)){
sc.clear = BX.create('div', {
props: {
className: 'bx-ui-'+code+'-clear'
},
attrs: {
title: so.messages.clearSelection
},
style: {
position: 'absolute',
top: '0px',
right: '0px'
}
});
sc.container.appendChild(sc.clear);
}
//if(sv.value === false)
BX.style(sc.clear, 'display', 'none');
// insert pane
sc.pane = this.getControl('pane', true);
if(!BX.type.isElementNode(sc.pane)){
sc.pane = BX.create('div', {
props: {
className: 'bx-ui-'+code+'-pane'
},
style: {
display: 'none',
position: 'absolute'
}
});
sc.container.appendChild(sc.pane);
}
// adjust a bit
if(so.usePagingOnScroll){
BX.style(sc.pane, 'overflow-y', 'auto');
BX.style(sc.pane, 'overflow-x', 'hidden');
if(so.paneHConstraint > 0 && so.paneHConstraintType != '')
BX.style(sc.pane, so.paneHConstraintType, so.paneHConstraint+'px');
}
if (so.usePopup)
{
BX.style(sc.pane, 'position', 'inherit');
BX.style(sc.pane, 'border', 'none');
BX.style(sc.pane, 'box-shadow', 'none');
}
// insert variants
sc.vars = this.getControl('variants', true);
if(!BX.type.isElementNode(sc.vars)){
sc.vars = BX.create('div', {
props: {
className: 'bx-ui-'+code+'-variants'
}
});
sc.pane.appendChild(sc.vars);
}
// nothing found message
sc.nothingFound = this.getControl('nothing-found', true);
// error message
sc.errorMessage = this.getControl('error-message', true);
},
bindEvents: function(){
var ctx = this,
so = this.opts,
sv = this.vars,
sc = this.ctrls,
code = this.sys.code;
// bind item select
if(so.selectByClick){
BX.bindDelegate(sc.pane, 'click', {
className: 'bx-ui-'+code+'-variant'
}, function(){
var id = BX.data(this, 'bx-'+code+'-item-value');
if(typeof id != 'undefined' && typeof sv.cache.nodes[id] != 'undefined'){
ctx.selectItem(id);
if(so.focusOnMouseSelect)
sc.inputs.fake.focus();
}
});
}
// bind debounced key-type input change
BX.bindDebouncedChange(sc.inputs.fake,
function(val){
if(val.length >= so.startSearchLen){
ctx.displayPage({QUERY: val});
}else
ctx.hideDropdown();
},
function(){
ctx.fireEvent('before-input-value-modify');
// dropping selections
ctx.deselectItem();
ctx.fireEvent('after-input-value-modify');
},
so.debounceTime,
sc.inputs.fake
);
// close dropdown by a custom event
BX.addCustomEvent(document, 'bx-ui-'+code+'-close-dropdown', function(){
ctx.hideDropdown();
});
// outside click should close the dropdown
if(so.closePopupOnOuterClick){
sv.outSideClickScope = sc.container;
BX.bind(document, 'click', function(e){
e = e || window.event;
if(!BX.isParentForNode(sv.outSideClickScope, e.target || e.srcElement)){
ctx.hideDropdown();
}
});
}
// keyboard events
BX.bind(sc.inputs.fake, 'keydown', function(e){
if(sv.keyboardMutex){
//console.dir('kb mutex is on, ignore keyboard');
return;
}
var key = e.keyCode || e.which;
var displayedLen = sv.displayedIndex.length;
if(so.chooseUsingArrows){
// up (38) - down (40)
if((key == 38 || key == 40) && sv.opened && displayedLen > 0){
var way = key == 38 ? -1 : 1;
// end were reached, but we can load more
if(sv.currentGlow == displayedLen - 1 && ctx.getCanLoadMore()){
return;
}
sv.previousGlow = sv.currentGlow;
sv.currentGlow += way;
sv.currentGlow = sv.currentGlow % displayedLen;
if(sv.currentGlow < 0)
sv.currentGlow = displayedLen + sv.currentGlow;
ctx.toggleGlow();
var item = sc.displayedItems[sv.displayedIndex[sv.currentGlow]];
if(so.scrollToVariantOnArrow){
// here we determine currently selected item is not in the visible area
var pos = BX.pos(item, sc.vars);
var itemBottomPos = pos.top+pos.height;
var a = pos.top;
var b = pos.height;
var c = sc.pane.clientHeight;
var d = sc.pane.scrollTop;
var f = so.arrowScrollAdditional;
if(a + b > c + d){
sc.scrollController.scrollTo({dy: a + b - (c + d) + f});
}else if(a < d){
sc.scrollController.scrollTo({dy: -(d - a + f)});
}
}
BX.PreventDefault(e);
}
}
// on enter we perform item selection
if(key == 13 && so.selectOnEnter){
if(sv.currentGlow !== false)
ctx.selectItem(sv.displayedIndex[sv.currentGlow]);
else if(sv.opened && displayedLen > 0)
ctx.selectItem(sv.displayedIndex[0]);
}
// on tab dropdown close and optional select
if(key == 9 && sv.opened && so.autoSelectOnTab){
if((so.autoSelectOnlyIfOneVariant && displayedLen == 1) || (!so.autoSelectOnlyIfOneVariant && displayedLen > 0))
ctx.selectItem(sv.displayedIndex[0]);
else
ctx.hideDropdown();
}
if(key == 13)
BX.PreventDefault(e);
});
if(so.autoSelectOnBlur)
{
BX.bind(sc.inputs.fake, 'blur', function(){
var displayedLen = sv.displayedIndex.length;
if(sv.opened && ((so.autoSelectOnlyIfOneVariant && displayedLen == 1) || (!so.autoSelectOnlyIfOneVariant && displayedLen > 0)))
ctx.selectItem(sv.displayedIndex[0]);
});
}
if(so.autoSelectOnBlur)
{
BX.bind(sc.inputs.fake, 'blur', function(){
var displayedLen = sv.displayedIndex.length;
if(sv.opened && ((so.autoSelectOnlyIfOneVariant && displayedLen == 1) || (!so.autoSelectOnlyIfOneVariant && displayedLen > 0)))
ctx.selectItem(sv.displayedIndex[0]);
});
}
// when nothing were selected (but there were already an attempt of search), open dropdown if it was closed occasionly by user
BX.bind(sc.inputs.fake, 'click', function(){
if(!sv.opened && sv.value === false && sv.displayedIndex.length > 0)
{
ctx.showDropdown();
}
});
// clear handle
BX.bind(sc.clear, 'click', function(){
ctx.clearSelected();
});
if(so.usePagingOnScroll){
if(so.useCustomScrollPane){
sc.scrollController = null;
throw new Error('Sorry, custom scroll panel currently is not implemented');
}else{
sc.scrollController = new BX.ui.scrollPaneNative({
scope: sc.pane,
eventTimeout: so.scrollThrottleTimeout,
controls: {
'container': sc.pane
}
});
}
ctx.vars.addPage = BX.debounce(function(){
if(!sv.opened)
return;
ctx.blockingCall(); // set mutex
ctx.displayNextPage();
}, 10);
sc.scrollController.bindEvent('scroll-to-end', ctx.vars.addPage);
sc.scrollController.bindEvent('has-free-space', ctx.vars.addPage);
// when really add smth, dispatch this signal:
this.bindEvent('after-page-display', function(){
sc.scrollController.informContentChanged();
if(ctx.vars.lastPage == 0)
sc.scrollController.dropScrollTop();
});
}
// handle onChange event
BX.bind(sc.inputs.origin, 'change', function(){
if(sv.eventLock)
return;
if(this.value == ''){ // this is a plain reset
if(sv.value)
ctx.clearSelected();
}else{
ctx.setValue(this.value);
}
});
},
////////// PUBLIC: free to use outside
// common
// todo
addItems2Cache: function(){
},
clearCache: function(){
},
// set focus to fake input
focus: function(){
this.ctrls.inputs.fake.focus();
},
// todo
checkDisabled: function(){
},
// todo
disable: function(){
},
// todo
enable: function(){
},
// function made to have ability to set value externally: when passed empty string, it resets the whole control, otherwise
// it searches for the value in the cache. And then, if none is found, sends request to server to obtain missing item
setValue: function(value, autoSelect){
var sv = this.vars,
so = this.opts,
sc = this.ctrls,
ctx = this;
this.hideError();
// clean
if(value == null || value == false || typeof value == 'undefined' || value.toString().length == 0){ // deselect
this.resetVariables();
BX.cleanNode(sc.vars);
if(BX.type.isElementNode(sc.nothingFound))
BX.hide(sc.nothingFound);
this.fireEvent('after-deselect-item');
this.fireEvent('after-clear-selection');
return;
}else if(value == sv.value) // dup
return;
if(autoSelect !== false)
sv.forceSelectSingeOnce = true;
if(typeof sv.cache.nodes[value] == 'undefined'){
// lazyload it...
this.resetNavVariables();
ctx.downloadBundle({VALUE: value}, function(data){
ctx.fillCache(data, false); // storing item in the cache
if(typeof sv.cache.nodes[value] == 'undefined'){ // still not found
ctx.showNothingFound();
}else{
//////////////////
if(so.autoSelectIfOneVariant || sv.forceSelectSingeOnce)
ctx.selectItem(value);
else
ctx.displayVariants([value]);
//////////////////
}
}, function(){
sv.forceSelectSingeOnce = false;
});
}else{
if(sv.forceSelectSingeOnce)
this.selectItem(value);
else
this.displayVariants([value]);
sv.forceSelectSingeOnce = false;
}
},
getValue: function(){
return this.vars.value === false ? '' : this.vars.value;
},
clearSelected: function(){
this.setValue('');
},
getNodeByValue: function(value){
return this.vars.cache.nodes[value];
},
setTabIndex: function(index){
this.ctrls.inputs.fake.setAttribute('tabindex', index);
},
setTargetInputName: function(newName){
this.ctrls.inputs.origin.setAttribute('name', newName);
},
cancelRequest: function(){
// completely cancel current pending query
this.vars.forceSelectSingeOnce = false;
// todo
},
// low-level, use with caution
setTargetInputValue: function(value){
this.vars.eventLock = true;
this.ctrls.inputs.origin.value = this.getSelectorValue(value);
BX.fireEvent(this.ctrls.inputs.origin, 'change');
this.vars.eventLock = false;
},
// function sets value of a fake input
setFakeInputValue: function(display){
var sc = this.ctrls;
BX.data(sc.inputs.fake, 'bx-dc-previous-value', display); // prevent bindDebouncedChange from fire
sc.inputs.fake.value = display; // update fake input value
},
setValueVariable: function(value){
this.vars.value = value;
},
////////// PRIVATE: forbidden to use outside (for compatibility reasons)
fillCache: function(items, key){
var sv = this.vars,
so = this.opts;
if(!items.length)
return;
// first fill items themselves
for(var k in items)
if(items.hasOwnProperty(k))
this.addItem2Cache(items[k]);
if(typeof key == 'number' && key != 0){
if(typeof sv.cache.search[key] == 'undefined')
sv.cache.search[key] = [];
for(var k in items)
if(items.hasOwnProperty(k))
sv.cache.search[key].push(items[k].VALUE);
}
},
addItem2Cache: function(item){
this.vars.cache.nodes[item.VALUE] = item;
},
setInitialValue: function(){
var initalValue = false;
if(this.opts.selectedItem !== false)
initalValue = this.opts.selectedItem;
else if(this.ctrls.inputs.origin.value.length > 0)
initalValue = this.ctrls.inputs.origin.value;
if(initalValue !== false)
this.setValue(initalValue);
},
getCachedPage: function(query, pageNum){
var so = this.opts,
sv = this.vars;
var key = this.getCacheKeyForQuery(query);
if(typeof sv.cache.search[key] != 'object' || !('length' in sv.cache.search[key]))
return false;
var page = sv.cache.search[key].slice((pageNum * so.pageSize), ((pageNum + 1) * so.pageSize));
if(page.length == 0)
return false;
return page;
},
displayNextPage: function(){
var sv = this.vars;
if(!this.opts.usePagingOnScroll || sv.lastQuery == null)
return;
this.displayPage(sv.lastQuery, sv.lastPage + 1);
},
displayPage: function(query, pageNum){
var so = this.opts,
sv = this.vars,
sc = this.ctrls,
ctx = this;
if(sv.blockingCall && sv.displayPageMutex) // display is locked with the previous call
return;
query = this.refineQuery(query);
var key = this.getCacheKeyForQuery(query);
if(typeof pageNum == 'undefined')
pageNum = 0;
var ceiling = this.manageCeiling(key);
if(ceiling > 0 && ceiling <= pageNum)
return; // no more pages, maximum were reached for that query
//console.dir('lock kb mutex');
sv.keyboardMutex = true;
sv.displayPageMutex = true;
sv.blockingCall = false;
sv.lastQuery = query;
sv.lastPage = pageNum;
if(so.useCache){
var page = this.getCachedPage(query, pageNum);
if(page !== false){
// showing cached page
//console.dir('From cache');
//////////////////
if((so.autoSelectIfOneVariant || sv.forceSelectSingeOnce) && page.length == 1 && sv.lastPage == 0)
ctx.selectItem(page[0]);
else
ctx.displayVariants(page, pageNum);
//////////////////
sv.forceSelectSingeOnce = false;
sv.displayPageMutex = false;
sv.keyboardMutex = false;
}else{
// page not found, download
//console.dir('Load page');
ctx.downloadBundle(query, function(data){
ctx.fillCache(data, key); // storing data in the cache
page = this.getCachedPage(query, pageNum);
if(page == false){
if(pageNum == 0)
ctx.showNothingFound(); // still not found
else{
ctx.manageCeiling(key, pageNum); // maximum reached
}
}else{
//////////////////
if((so.autoSelectIfOneVariant || sv.forceSelectSingeOnce) && page.length == 1 && sv.lastPage == 0)
ctx.selectItem(page[0]);
else
ctx.displayVariants(page, pageNum);
//////////////////
if(!so.paginatedRequest) // we have just downloaded everyting, no further paging needed for
ctx.manageCeiling(key, Math.ceil(sv.cache.search[key].length / so.pageSize));
}
}, function(){
sv.forceSelectSingeOnce = false;
sv.blockingCall = false;
sv.displayPageMutex = false;
sv.keyboardMutex = false;
//console.dir('UNlock kb mutex');
});
}
}else
throw new Error('Sorry, useCache = false currently is not implemented');
},
manageCeiling: function(key, pageNum){
var sv = this.vars;
if(typeof pageNum == 'undefined'){
if(typeof sv.cache.ceilings[key] == 'undefined')
return -1;
return sv.cache.ceilings[key];
}
sv.cache.ceilings[key] = pageNum;
},
getCanLoadMore: function(key){
var sv = this.vars;
if(typeof key == 'undefined')
key = this.getCacheKeyForQuery(sv.lastQuery);
if(typeof sv.cache.ceilings[key] == 'undefined')
return true;
return sv.lastPage < sv.cache.ceilings[key];
},
resetVariables: function(){
this.deselectItem();
this.setFakeInputValue('');
this.resetNavVariables();
},
resetNavVariables: function(){
this.vars.lastQuery = null;
this.vars.lastPage = 0;
},
// this function sets value of an origin input
setTargetValue: function(value){
var so = this.opts,
sv = this.vars,
wasSelected = this.vars.value !== false;
sv.value = value == '' ? false : value;
this.setTargetInputValue(value);
if(sv.value)
this.fireEvent('after-select-item', [sv.value, true]);
else if(wasSelected)
this.fireEvent('after-deselect-item');
},
blockingCall: function(){
this.vars.blockingCall = true;
},
downloadBundle: function(request, onLoad, onComplete, onError){
var so = this.opts,
sv = this.vars,
sc = this.ctrls,
ctx = this;
sv.loader.show();
BX.ajax({
url: ctx.opts.source,
method: 'post',
dataType: 'json',
async: true,
processData: true,
emulateOnload: true,
start: true,
data: BX.merge(ctx.refineRequest(request), ctx.getNavParams()),
//cache: true,
onsuccess: function(result){
//try{
sv.loader.hide();
if(result.result){
result.data = ctx.refineResponce(result.data, request);
if(typeof result.data == 'undefined')
result.data = [];
onLoad.apply(ctx, [result.data]);
}else
ctx.showError(ctx.opts.messages.error, result.errors);
onComplete.call(ctx);
//}catch(e){console.dir(e);}
if (sc.popup)
{
sc.popup.adjustPosition();
}
},
onfailure: function(e){
sv.loader.hide();
ctx.showError(
so.messages.error,
false,
e
);
onComplete.call(ctx);
if(BX.type.isFunction(onError))
onError.call(ctx);
if (sc.popup)
{
sc.popup.adjustPosition();
}
}
});
},
getNavParams: function(){
return this.opts.paginatedRequest ? {
PAGE_SIZE: this.opts.pageSize,
PAGE: this.vars.lastPage
} : {};
},
getSelectorValue: function(value){
return value;
},
getCacheKeyForQuery: function(query){
var str = '';
for(var k in query){
if(query.hasOwnProperty(k)){
str += k.toString().toLowerCase()+':'+query[k].toString().toLowerCase()+'|';
}
}
return BX.util.hashCode(str);
},
// cache depends on the value returned by this function
refineQuery: function(query){
return query;
},
// this function is called just before request send, i.e. it`s look like a 'query proxy'
refineRequest: function(query){
return query;
},
// responce 'proxy-back'
refineResponce: function(responce, request){
return responce;
},
// turn everyting off and clear up selection
deselectItem: function(){
var sv = this.vars,
sc = this.ctrls,
so = this.opts;
this.hideError();
this.whenClearToggle.apply(this, [false]);
sv.currentGlow = false;
sv.previousGlow = false;
sv.displayedIndex = [];
sc.displayedItems = {};
// todo: turn off input origin "change" signal processing to avoid collisions
this.setTargetValue('');
},
// invokes when user selects value
selectItem: function(value){
var sv = this.vars,
sc = this.ctrls,
so = this.opts;
sv.value = value; // set current [VALUE, DISPLAY] pair id
sc.inputs.origin.value = sv.cache.nodes[value].VALUE; // update origin input value
this.setFakeInputValue(this.whenItemSelect.apply(this, [value]));
this.hideDropdown();
this.whenClearToggle.apply(this, [true]);
this.setTargetValue(value);
},
toggleGlow: function(){
var so = this.opts,
sc = this.ctrls,
sv = this.vars;
var item = sc.displayedItems[sv.displayedIndex[sv.currentGlow]];
if(sv.previousGlow !== false)
this.whenItemToggle(false, sc.displayedItems[sv.displayedIndex[sv.previousGlow]], sv.previousGlow); // here we can have event triggering instead
if(sv.currentGlow !== false)
this.whenItemToggle(true, item, sv.currentGlow); // here we can have event triggering instead
},
showDropdown: function(){
if(this.vars.opened)
return;
var flip = !this.vars.opened;
this.vars.opened = true;
if(this.vars.lastPage == 0){
this.whenItemToggle(false, this.ctrls.displayedItems[this.vars.displayedIndex[this.vars.currentGlow]], this.vars.currentGlow);
this.vars.currentGlow = 0;
this.toggleGlow();
}
BX.show(this.ctrls.pane); // read height
var paneHeight = BX.height(this.ctrls.pane);
BX.hide(this.ctrls.pane); // read height end
var input = this.ctrls.inputs.fake;
var inputPos = BX.pos(input);
var spaceUnderItem = BX.scrollTop(window) + BX.height(window) - (Math.ceil(inputPos.top) + inputPos.height);
this.whenDropdownToggle.apply(this, [true, spaceUnderItem - paneHeight < -20, inputPos.height, flip]);
},
hideDropdown: function(){
this.vars.opened = false;
this.whenDropdownToggle.apply(this, [false, false, 0, true]);
},
clearDisplayedVariants: function(){
this.hideDropdown();
this.vars.displayedIndex = [];
},
displayVariants: function(items, pageNum){
var sc = this.ctrls,
sv = this.vars,
so = this.opts,
code = this.sys.code;
//this.hideDropdown(); // todo: here ...
this.hideNothingFound(); // and here ...
if(typeof pageNum == 'undefined' || pageNum == 0){
BX.cleanNode(sc.vars); // and here "deferred" pattern required, kz hideDropdown() might be async in some implementations
sv.displayedIndex = [];
sc.displayedItems = {};
}
var base = sv.displayedIndex.length;
for(var k in items)
{
if(!items.hasOwnProperty(k))
continue;
if(!items[k])
continue;
var domItem = this.whenRenderVariant(items[k], base + parseInt(k))[0];
BX.data(domItem, 'bx-'+code+'-item-value', items[k]);
sc.vars.appendChild(domItem);
this.fireEvent('after-item-append', [domItem]);
sv.displayedIndex.push(items[k]);
sc.displayedItems[items[k]] = domItem;
}
this.showDropdown();
this.fireEvent('after-page-display', [sv.cache.nodes, pageNum]);
},
showNothingFound: function(){
BX.cleanNode(this.ctrls.vars);
if(BX.type.isElementNode(this.ctrls.nothingFound))
this.whenNothingFoundToggle(true);
else{ // show message directly in the dropdown
this.ctrls.vars.appendChild(this.whenRenderNothingFound(this.opts.messages.nothingFound));
this.showDropdown();
}
this.fireEvent('nothing-found'); // this.opts.onNothingFound.apply(this);
},
hideNothingFound: function(){
if(BX.type.isElementNode(this.ctrls.nothingFound))
this.whenNothingFoundToggle(false);
},
// actually, means "hide static error"
hideError: function(){
if(BX.type.isElementNode(this.ctrls.errorMessage) && this.vars.allowHideErrors)
BX.hide(this.ctrls.errorMessage);
},
showError: function(errorLabel, messages, sysDesc){
BX.cleanNode(this.ctrls.vars);
this.ctrls.vars.appendChild(this.whenRenderError(errorLabel));
this.showDropdown();
BX.debug(arguments);
},
refineItemDataForTemplate: function(itemData){
var query = this.vars.lastQuery.QUERY;
if(BX.type.isNotEmptyString(query)){
var chunks = [];
if(this.opts.wrapSeparate)
chunks = query.split(/\s+/);
else
chunks = [query];
itemData['=display_wrapped'] = BX.util.wrapSubstring(itemData.DISPLAY, chunks, this.opts.wrapTagName, true);
}else
itemData['=display_wrapped'] = BX.util.htmlspecialchars(itemData.DISPLAY);
return itemData;
},
getCurrentItem: function(){
return this.vars.cache.nodes[this.vars.value];
},
/* Behaviour functions below */
whenDisplayVariant: function(itemId){
return this.vars.cache.nodes[itemId]['DISPLAY'];
},
whenItemSelect: function(itemId){ // evaluates when user selects a particular item. should return value which we want in our fake input
return this.vars.cache.nodes[itemId]['DISPLAY'];
},
whenLoaderToggle: function(way){
BX[way ? 'addClass' : 'removeClass'](this.ctrls.inputs.fake, 'bx-ui-'+this.sys.code+'-loading');
},
whenDropdownToggle: function(way, upward, inputHeight, flip){
if(way)
{
if(flip)
{
this.whenDecidePaneOrient(upward, inputHeight, flip);
}
if (this.opts.usePopup)
{
this.ctrls.popup = BX.PopupWindowManager.create(
'popup-location-search-list',
this.ctrls.scope.parentNode,
{
className: 'bx-sls',
content: this.ctrls.pane,
bindOptions: { forceBindPosition: true },
zIndex: 1020
}
);
this.ctrls.popup.show();
}
BX.show(this.ctrls.pane);
}
else
{
if (this.opts.usePopup && this.ctrls.popup)
{
this.ctrls.popup.destroy();
}
BX.hide(this.ctrls.pane);
}
this.fireEvent('after-popup-toggled', [way]);
},
whenDecidePaneOrient: function(upward, inputHeight){
var sc = this.ctrls;
if(upward){
var top = BX.style(sc.pane, 'top');
if(top != 'auto'){
BX.data(sc.pane, 'pane-top', top);
}
BX.style(sc.pane, 'top', 'auto');
BX.style(sc.pane, 'bottom', (inputHeight + this.opts.pageUpWardOffset)+'px');
}else{
var top = BX.data(sc.pane, 'pane-top');
if(typeof top != 'undefined')
BX.style(sc.pane, 'top', top);
BX.style(sc.pane, 'bottom', 'auto');
}
},
whenItemToggle: function(way, node, itemId){
BX[way ? 'addClass' : 'removeClass'](node, 'bx-ui-'+this.sys.code+'-variant-active');
},
whenClearToggle: function(way){
BX[way ? 'show' : 'hide'](this.ctrls.clear);
},
whenNothingFoundToggle: function(way){
BX[way ? 'show' : 'hide'](this.ctrls.nothingFound);
},
whenRenderVariant: function(itemId, index){
var itemData = BX.clone(this.vars.cache.nodes[itemId]);
itemData = this.refineItemDataForTemplate(itemData);
itemData.index = index;
this.fireEvent('before-render-variant', [itemData]);
if(typeof this.tmpls['dropdown-item'] == 'string')
return this.createNodesByTemplate('dropdown-item', itemData, true);
return [BX.create('div', {
props: {
className: 'bx-ui-'+this.sys.code+'-variant'
},
text: this.vars.cache.nodes[itemId]['DISPLAY']
})];
},
whenRenderError: function(message){
if(typeof this.tmpls['error'] == 'string')
return this.createNodesByTemplate('error', {message: message}, true)[0];
return BX.create('div', {
props: {
className: 'bx-ui-'+this.sys.code+'-error'
},
text: message
});
},
whenRenderNothingFound: function(message){
if(typeof this.tmpls['nothing-found'] == 'string')
return this.createNodesByTemplate('nothing-found', {message: message}, true)[0];
return this.whenRenderError(message);
}
});
})();