442 lines
14 KiB
JavaScript
442 lines
14 KiB
JavaScript
|
/**
|
||
|
|
* Autocompleter
|
||
|
|
*
|
||
|
|
* http://digitarald.de/project/autocompleter/
|
||
|
|
*
|
||
|
|
* @version 1.1.2
|
||
|
|
*
|
||
|
|
* @license MIT-style license
|
||
|
|
* @author Harald Kirschner <mail [at] digitarald.de>
|
||
|
|
* @copyright Author
|
||
|
|
*/
|
||
|
|
|
||
|
|
var Autocompleter = new Class({
|
||
|
|
|
||
|
|
Implements: [Options, Events],
|
||
|
|
|
||
|
|
options: {/*
|
||
|
|
onOver: $empty,
|
||
|
|
onSelect: $empty,
|
||
|
|
onSelection: $empty,
|
||
|
|
onShow: $empty,
|
||
|
|
onHide: $empty,
|
||
|
|
onBlur: $empty,
|
||
|
|
onFocus: $empty,*/
|
||
|
|
minLength: 1,
|
||
|
|
markQuery: true,
|
||
|
|
width: 'inherit',
|
||
|
|
maxChoices: 10,
|
||
|
|
injectChoice: null,
|
||
|
|
customChoices: null,
|
||
|
|
emptyChoices: null,
|
||
|
|
visibleChoices: true,
|
||
|
|
className: 'autocompleter-choices',
|
||
|
|
zIndex: 42,
|
||
|
|
delay: 400,
|
||
|
|
observerOptions: {},
|
||
|
|
fxOptions: {},
|
||
|
|
|
||
|
|
autoSubmit: false,
|
||
|
|
overflow: false,
|
||
|
|
overflowMargin: 25,
|
||
|
|
selectFirst: false,
|
||
|
|
filter: null,
|
||
|
|
filterCase: false,
|
||
|
|
filterSubset: false,
|
||
|
|
forceSelect: false,
|
||
|
|
selectMode: true,
|
||
|
|
choicesMatch: null,
|
||
|
|
|
||
|
|
multiple: false,
|
||
|
|
separator: ', ',
|
||
|
|
separatorSplit: /\s*[,;]\s*/,
|
||
|
|
autoTrim: false,
|
||
|
|
allowDupes: false,
|
||
|
|
|
||
|
|
cache: true,
|
||
|
|
relative: false
|
||
|
|
},
|
||
|
|
|
||
|
|
initialize: function(element, options) {
|
||
|
|
this.element = $(element);
|
||
|
|
this.setOptions(options);
|
||
|
|
this.build();
|
||
|
|
this.observer = new Observer(this.element, this.prefetch.bind(this), $merge({
|
||
|
|
'delay': this.options.delay
|
||
|
|
}, this.options.observerOptions));
|
||
|
|
this.queryValue = null;
|
||
|
|
if (this.options.filter) this.filter = this.options.filter.bind(this);
|
||
|
|
var mode = this.options.selectMode;
|
||
|
|
this.typeAhead = (mode == 'type-ahead');
|
||
|
|
this.selectMode = (mode === true) ? 'selection' : mode;
|
||
|
|
this.cached = [];
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* build - Initialize DOM
|
||
|
|
*
|
||
|
|
* Builds the html structure for choices and appends the events to the element.
|
||
|
|
* Override this function to modify the html generation.
|
||
|
|
*/
|
||
|
|
build: function() {
|
||
|
|
if ($(this.options.customChoices)) {
|
||
|
|
this.choices = this.options.customChoices;
|
||
|
|
} else {
|
||
|
|
this.choices = new Element('ul', {
|
||
|
|
'class': this.options.className,
|
||
|
|
'styles': {
|
||
|
|
'zIndex': this.options.zIndex
|
||
|
|
}
|
||
|
|
}).inject(document.body);
|
||
|
|
this.relative = false;
|
||
|
|
if (this.options.relative) {
|
||
|
|
this.choices.inject(this.element, 'after');
|
||
|
|
this.relative = this.element.getOffsetParent();
|
||
|
|
}
|
||
|
|
this.fix = new OverlayFix(this.choices);
|
||
|
|
}
|
||
|
|
if (!this.options.separator.test(this.options.separatorSplit)) {
|
||
|
|
this.options.separatorSplit = this.options.separator;
|
||
|
|
}
|
||
|
|
this.fx = (!this.options.fxOptions) ? null : new Fx.Tween(this.choices, $merge({
|
||
|
|
'property': 'opacity',
|
||
|
|
'link': 'cancel',
|
||
|
|
'duration': 200
|
||
|
|
}, this.options.fxOptions)).addEvent('onStart', Chain.prototype.clearChain).set(0);
|
||
|
|
this.element.setProperty('autocomplete', 'off')
|
||
|
|
.addEvent((Browser.Engine.trident || Browser.Engine.webkit) ? 'keydown' : 'keypress', this.onCommand.bind(this))
|
||
|
|
.addEvent('click', this.onCommand.bind(this, [false]))
|
||
|
|
.addEvent('focus', this.toggleFocus.create({bind: this, arguments: true, delay: 100}))
|
||
|
|
.addEvent('blur', this.toggleFocus.create({bind: this, arguments: false, delay: 100}));
|
||
|
|
},
|
||
|
|
|
||
|
|
destroy: function() {
|
||
|
|
if (this.fix) this.fix.destroy();
|
||
|
|
this.choices = this.selected = this.choices.destroy();
|
||
|
|
},
|
||
|
|
|
||
|
|
toggleFocus: function(state) {
|
||
|
|
this.focussed = state;
|
||
|
|
if (!state) this.hideChoices(true);
|
||
|
|
this.fireEvent((state) ? 'onFocus' : 'onBlur', [this.element]);
|
||
|
|
},
|
||
|
|
|
||
|
|
onCommand: function(e) {
|
||
|
|
if (!e && this.focussed) return this.prefetch();
|
||
|
|
if (e && e.key && !e.shift) {
|
||
|
|
switch (e.key) {
|
||
|
|
case 'enter':
|
||
|
|
if (this.element.value != this.opted) return true;
|
||
|
|
if (this.selected && this.visible) {
|
||
|
|
this.choiceSelect(this.selected);
|
||
|
|
return !!(this.options.autoSubmit);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'up': case 'down':
|
||
|
|
if (!this.prefetch() && this.queryValue !== null) {
|
||
|
|
var up = (e.key == 'up');
|
||
|
|
this.choiceOver((this.selected || this.choices)[
|
||
|
|
(this.selected) ? ((up) ? 'getPrevious' : 'getNext') : ((up) ? 'getLast' : 'getFirst')
|
||
|
|
](this.options.choicesMatch), true);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
case 'esc': case 'tab':
|
||
|
|
this.hideChoices(true);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
},
|
||
|
|
|
||
|
|
setSelection: function(finish) {
|
||
|
|
var input = this.selected.inputValue, value = input;
|
||
|
|
var start = this.queryValue.length, end = input.length;
|
||
|
|
if (input.substr(0, start).toLowerCase() != this.queryValue.toLowerCase()) start = 0;
|
||
|
|
if (this.options.multiple) {
|
||
|
|
var split = this.options.separatorSplit;
|
||
|
|
value = this.element.value;
|
||
|
|
start += this.queryIndex;
|
||
|
|
end += this.queryIndex;
|
||
|
|
var old = value.substr(this.queryIndex).split(split, 1)[0];
|
||
|
|
value = value.substr(0, this.queryIndex) + input + value.substr(this.queryIndex + old.length);
|
||
|
|
if (finish) {
|
||
|
|
var tokens = value.split(this.options.separatorSplit).filter(function(entry) {
|
||
|
|
return this.test(entry);
|
||
|
|
}, /[^\s,]+/);
|
||
|
|
if (!this.options.allowDupes) tokens = [].combine(tokens);
|
||
|
|
var sep = this.options.separator;
|
||
|
|
value = tokens.join(sep) + sep;
|
||
|
|
end = value.length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.observer.setValue(value);
|
||
|
|
this.opted = value;
|
||
|
|
if (finish || this.selectMode == 'pick') start = end;
|
||
|
|
this.element.selectRange(start, end);
|
||
|
|
this.fireEvent('onSelection', [this.element, this.selected, value, input]);
|
||
|
|
},
|
||
|
|
|
||
|
|
showChoices: function() {
|
||
|
|
var match = this.options.choicesMatch, first = this.choices.getFirst(match);
|
||
|
|
this.selected = this.selectedValue = null;
|
||
|
|
if (this.fix) {
|
||
|
|
var pos = this.element.getCoordinates(this.relative), width = this.options.width || 'auto';
|
||
|
|
this.choices.setStyles({
|
||
|
|
'left': pos.left,
|
||
|
|
'top': pos.bottom,
|
||
|
|
'width': (width === true || width == 'inherit') ? pos.width : width
|
||
|
|
});
|
||
|
|
}
|
||
|
|
if (!first) return;
|
||
|
|
if (!this.visible) {
|
||
|
|
this.visible = true;
|
||
|
|
this.choices.setStyle('display', '');
|
||
|
|
if (this.fx) this.fx.start(1);
|
||
|
|
this.fireEvent('onShow', [this.element, this.choices]);
|
||
|
|
}
|
||
|
|
if (this.options.selectFirst || this.typeAhead || first.inputValue == this.queryValue) this.choiceOver(first, this.typeAhead);
|
||
|
|
var items = this.choices.getChildren(match), max = this.options.maxChoices;
|
||
|
|
var styles = {'overflowY': 'hidden', 'height': ''};
|
||
|
|
this.overflown = false;
|
||
|
|
if (items.length > max) {
|
||
|
|
var item = items[max - 1];
|
||
|
|
styles.overflowY = 'scroll';
|
||
|
|
styles.height = item.getCoordinates(this.choices).bottom;
|
||
|
|
this.overflown = true;
|
||
|
|
};
|
||
|
|
this.choices.setStyles(styles);
|
||
|
|
this.fix.show();
|
||
|
|
if (this.options.visibleChoices) {
|
||
|
|
var scroll = document.getScroll(),
|
||
|
|
size = document.getSize(),
|
||
|
|
coords = this.choices.getCoordinates();
|
||
|
|
if (coords.right > scroll.x + size.x) scroll.x = coords.right - size.x;
|
||
|
|
if (coords.bottom > scroll.y + size.y) scroll.y = coords.bottom - size.y;
|
||
|
|
window.scrollTo(Math.min(scroll.x, coords.left), Math.min(scroll.y, coords.top));
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
hideChoices: function(clear) {
|
||
|
|
if (clear) {
|
||
|
|
var value = this.element.value;
|
||
|
|
if (this.options.forceSelect) value = this.opted;
|
||
|
|
if (this.options.autoTrim) {
|
||
|
|
value = value.split(this.options.separatorSplit).filter($arguments(0)).join(this.options.separator);
|
||
|
|
}
|
||
|
|
this.observer.setValue(value);
|
||
|
|
}
|
||
|
|
if (!this.visible) return;
|
||
|
|
this.visible = false;
|
||
|
|
if (this.selected) this.selected.removeClass('autocompleter-selected');
|
||
|
|
this.observer.clear();
|
||
|
|
var hide = function(){
|
||
|
|
this.choices.setStyle('display', 'none');
|
||
|
|
this.fix.hide();
|
||
|
|
}.bind(this);
|
||
|
|
if (this.fx) this.fx.start(0).chain(hide);
|
||
|
|
else hide();
|
||
|
|
this.fireEvent('onHide', [this.element, this.choices]);
|
||
|
|
},
|
||
|
|
|
||
|
|
prefetch: function() {
|
||
|
|
var value = this.element.value, query = value;
|
||
|
|
if (this.options.multiple) {
|
||
|
|
var split = this.options.separatorSplit;
|
||
|
|
var values = value.split(split);
|
||
|
|
var index = this.element.getSelectedRange().start;
|
||
|
|
var toIndex = value.substr(0, index).split(split);
|
||
|
|
var last = toIndex.length - 1;
|
||
|
|
index -= toIndex[last].length;
|
||
|
|
query = values[last];
|
||
|
|
}
|
||
|
|
if (query.length < this.options.minLength) {
|
||
|
|
this.hideChoices();
|
||
|
|
} else {
|
||
|
|
if (query === this.queryValue || (this.visible && query == this.selectedValue)) {
|
||
|
|
if (this.visible) return false;
|
||
|
|
this.showChoices();
|
||
|
|
} else {
|
||
|
|
this.queryValue = query;
|
||
|
|
this.queryIndex = index;
|
||
|
|
if (!this.fetchCached()) this.query();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
},
|
||
|
|
|
||
|
|
fetchCached: function() {
|
||
|
|
return false;
|
||
|
|
if (!this.options.cache
|
||
|
|
|| !this.cached
|
||
|
|
|| !this.cached.length
|
||
|
|
|| this.cached.length >= this.options.maxChoices
|
||
|
|
|| this.queryValue) return false;
|
||
|
|
this.update(this.filter(this.cached));
|
||
|
|
return true;
|
||
|
|
},
|
||
|
|
|
||
|
|
update: function(tokens) {
|
||
|
|
this.choices.empty();
|
||
|
|
this.cached = tokens;
|
||
|
|
var type = tokens && $type(tokens);
|
||
|
|
if (!type || (type == 'array' && !tokens.length) || (type == 'hash' && !tokens.getLength())) {
|
||
|
|
(this.options.emptyChoices || this.hideChoices).call(this);
|
||
|
|
} else {
|
||
|
|
if (this.options.maxChoices < tokens.length && !this.options.overflow) tokens.length = this.options.maxChoices;
|
||
|
|
tokens.each(this.options.injectChoice || function(token){
|
||
|
|
var choice = new Element('li', {'html': this.markQueryValue(token)});
|
||
|
|
choice.inputValue = token;
|
||
|
|
this.addChoiceEvents(choice).inject(this.choices);
|
||
|
|
}, this);
|
||
|
|
this.showChoices();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
choiceOver: function(choice, selection) {
|
||
|
|
if (!choice || choice == this.selected) return;
|
||
|
|
if (this.selected) this.selected.removeClass('autocompleter-selected');
|
||
|
|
this.selected = choice.addClass('autocompleter-selected');
|
||
|
|
this.fireEvent('onSelect', [this.element, this.selected, selection]);
|
||
|
|
if (!this.selectMode) this.opted = this.element.value;
|
||
|
|
if (!selection) return;
|
||
|
|
this.selectedValue = this.selected.inputValue;
|
||
|
|
if (this.overflown) {
|
||
|
|
var coords = this.selected.getCoordinates(this.choices), margin = this.options.overflowMargin,
|
||
|
|
top = this.choices.scrollTop, height = this.choices.offsetHeight, bottom = top + height;
|
||
|
|
if (coords.top - margin < top && top) this.choices.scrollTop = Math.max(coords.top - margin, 0);
|
||
|
|
else if (coords.bottom + margin > bottom) this.choices.scrollTop = Math.min(coords.bottom - height + margin, bottom);
|
||
|
|
}
|
||
|
|
if (this.selectMode) this.setSelection();
|
||
|
|
},
|
||
|
|
|
||
|
|
choiceSelect: function(choice) {
|
||
|
|
if (choice) this.choiceOver(choice);
|
||
|
|
this.setSelection(true);
|
||
|
|
this.queryValue = false;
|
||
|
|
this.hideChoices();
|
||
|
|
},
|
||
|
|
|
||
|
|
filter: function(tokens) {
|
||
|
|
return (tokens || this.tokens).filter(function(token) {
|
||
|
|
return this.test(token);
|
||
|
|
}, new RegExp(((this.options.filterSubset) ? '' : '^') + this.queryValue.escapeRegExp(), (this.options.filterCase) ? '' : 'i'));
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* markQueryValue
|
||
|
|
*
|
||
|
|
* Marks the queried word in the given string with <span class="autocompleter-queried">*</span>
|
||
|
|
* Call this i.e. from your custom parseChoices, same for addChoiceEvents
|
||
|
|
*
|
||
|
|
* @param {String} Text
|
||
|
|
* @return {String} Text
|
||
|
|
*/
|
||
|
|
markQueryValue: function(str) {
|
||
|
|
return (!this.options.markQuery || !this.queryValue) ? str
|
||
|
|
: str.replace(new RegExp('(' + ((this.options.filterSubset) ? '' : '^') + this.queryValue.escapeRegExp() + ')', (this.options.filterCase) ? '' : 'i'), '<span class="autocompleter-queried">$1</span>');
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* addChoiceEvents
|
||
|
|
*
|
||
|
|
* Appends the needed event handlers for a choice-entry to the given element.
|
||
|
|
*
|
||
|
|
* @param {Element} Choice entry
|
||
|
|
* @return {Element} Choice entry
|
||
|
|
*/
|
||
|
|
addChoiceEvents: function(el) {
|
||
|
|
return el.addEvents({
|
||
|
|
'mouseover': this.choiceOver.bind(this, [el]),
|
||
|
|
'click': this.choiceSelect.bind(this, [el])
|
||
|
|
});
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
var OverlayFix = new Class({
|
||
|
|
|
||
|
|
initialize: function(el) {
|
||
|
|
if (Browser.Engine.trident) {
|
||
|
|
this.element = $(el);
|
||
|
|
this.relative = this.element.getOffsetParent();
|
||
|
|
this.fix = new Element('iframe', {
|
||
|
|
'frameborder': '0',
|
||
|
|
'scrolling': 'no',
|
||
|
|
'src': 'javascript:false;',
|
||
|
|
'styles': {
|
||
|
|
'position': 'absolute',
|
||
|
|
'border': 'none',
|
||
|
|
'display': 'none',
|
||
|
|
'filter': 'progid:DXImageTransform.Microsoft.Alpha(opacity=0)'
|
||
|
|
}
|
||
|
|
}).inject(this.element, 'after');
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
show: function() {
|
||
|
|
if (this.fix) {
|
||
|
|
var coords = this.element.getCoordinates(this.relative);
|
||
|
|
delete coords.right;
|
||
|
|
delete coords.bottom;
|
||
|
|
this.fix.setStyles($extend(coords, {
|
||
|
|
'display': '',
|
||
|
|
'zIndex': (this.element.getStyle('zIndex') || 1) - 1
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
},
|
||
|
|
|
||
|
|
hide: function() {
|
||
|
|
if (this.fix) this.fix.setStyle('display', 'none');
|
||
|
|
return this;
|
||
|
|
},
|
||
|
|
|
||
|
|
destroy: function() {
|
||
|
|
if (this.fix) this.fix = this.fix.destroy();
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
Element.implement({
|
||
|
|
|
||
|
|
getSelectedRange: function() {
|
||
|
|
if (!Browser.Engine.trident) return {start: this.selectionStart, end: this.selectionEnd};
|
||
|
|
var pos = {start: 0, end: 0};
|
||
|
|
var range = this.getDocument().selection.createRange();
|
||
|
|
if (!range || range.parentElement() != this) return pos;
|
||
|
|
var dup = range.duplicate();
|
||
|
|
if (this.type == 'text') {
|
||
|
|
pos.start = 0 - dup.moveStart('character', -100000);
|
||
|
|
pos.end = pos.start + range.text.length;
|
||
|
|
} else {
|
||
|
|
var value = this.value;
|
||
|
|
var offset = value.length - value.match(/[\n\r]*$/)[0].length;
|
||
|
|
dup.moveToElementText(this);
|
||
|
|
dup.setEndPoint('StartToEnd', range);
|
||
|
|
pos.end = offset - dup.text.length;
|
||
|
|
dup.setEndPoint('StartToStart', range);
|
||
|
|
pos.start = offset - dup.text.length;
|
||
|
|
}
|
||
|
|
return pos;
|
||
|
|
},
|
||
|
|
|
||
|
|
selectRange: function(start, end) {
|
||
|
|
if (Browser.Engine.trident) {
|
||
|
|
var diff = this.value.substr(start, end - start).replace(/\r/g, '').length;
|
||
|
|
start = this.value.substr(0, start).replace(/\r/g, '').length;
|
||
|
|
var range = this.createTextRange();
|
||
|
|
range.collapse(true);
|
||
|
|
range.moveEnd('character', start + diff);
|
||
|
|
range.moveStart('character', start);
|
||
|
|
range.select();
|
||
|
|
} else {
|
||
|
|
this.focus();
|
||
|
|
this.setSelectionRange(start, end);
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
/* compatibility */
|
||
|
|
|
||
|
|
Autocompleter.Base = Autocompleter;
|