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META-INF.resources.butterfaces-js.butterfaces-autocomplete.jquery.js Maven / Gradle / Ivy
/**
* jQuery-Plugin "butterHandleAutoComplete" for text autocomplete tag. Initializes auto complete functionality to
* text component.
*
* How to use:
* jQuery("#selector")._butterAutoCompleteInit();
*/
(function ($) {
// extend jQuery --------------------------------------------------------------------
$.fn._butterAutoCompleteInit = function () {
return this.each(function () {
new AutocompleteList(this);
});
};
// define objects --------------------------------------------------------------------
var AutocompleteList = Class.extend({
init: function (rootElement) {
this.SEARCH_REQUEST_DELAY = 300;// in ms
var $autocompleteTmp = $(rootElement);
this.$input = $autocompleteTmp.prev();
this.$input.parent().css({position: "relative"});
this.autocompleteId = $autocompleteTmp.attr("id");
this.$selectedOption = null;
this.ignoreKeyupEvent = false;
this.requestDelayTimerId = null;
this.isRequestRunning = false;
this.areChangesMadeWhileRequestWasRunning = false;
this._keyCodes = {
//backspace: 8,
tab: 9,
enter: 13,
shift: 16,
ctrl: 17,
alt: 18,
pause: 19,
caps_lock: 20,
escape: 27,
page_up: 33,
page_down: 34,
end: 35,
home: 36,
arrow_left: 37,
arrow_up: 38,
arrow_right: 39,
arrow_down: 40,
insert: 45,
// 'delete' is a reserved key word
delete_key: 46,
left_window_key: 91,
right_window_key: 92,
select_key: 93,
num_lock: 144,
scroll_lock: 145
};
var self = this;
self.$input
.on("keydown", function (event) {
if (event.which === self._keyCodes.enter) {
self._handleEnterKeyDown(event);
} else if (event.which === self._keyCodes.arrow_up
|| event.which === self._keyCodes.arrow_down) {
self._handleArrowUpAndDownKeyDown(event);
} else if (event.which === self._keyCodes.escape) {
self._handleEscapeKeyDown(event);
}
})
.on("keyup", function (event) {
// don't handle other keys than character keys
for (keyName in self._keyCodes) {
if (self._keyCodes[keyName] === event.which) {
self._stopEvent(event);
return;
}
}
if (self.ignoreKeyupEvent) {
self._stopEvent(event);
self.ignoreKeyupEvent = false;
return;
}
if (self.$input.val().length === 0) {
self._stopEvent(event);
self._hideAutocompleteResultList();
return;
}
self._trySendJsfAjaxRequest();
})
.on("blur", function (event) {
window.setTimeout(function () {
self._hideAutocompleteResultList();
}, 100);
});
},
_handleEnterKeyDown: function (event) {
if (this.$selectedOption !== null) {
this._stopEvent(event);
this._setSelectedValue();
}
},
_handleArrowUpAndDownKeyDown: function (event) {
this._stopEvent(event);
var $autocomplete = this._getAutocompleteElement();
if (!$autocomplete.is(":visible") && this.$input.val().length > 0) {
this._trySendJsfAjaxRequest();
} else if ($autocomplete.is(":visible") && $autocomplete.find("li").length > 0) {
if (this.$selectedOption === null) {
this._selectResultOptionElement($autocomplete.find("li")[0]);
} else {
this._moveResultOptionElementSelectionCursor(
$autocomplete, event.which === this._keyCodes.arrow_up ? -1 : 1);
}
}
},
_handleEscapeKeyDown: function (event) {
this._stopEvent(event);
this._hideAutocompleteResultList();
},
_trySendJsfAjaxRequest: function () {
var self = this;
if (self.isRequestRunning) {
// console.log("request is active, so remember that changes has been made while request was running");
self.areChangesMadeWhileRequestWasRunning = true;
}
if (self.requestDelayTimerId !== null) {
window.clearTimeout(self.requestDelayTimerId)
}
self.requestDelayTimerId = window.setTimeout(function () {
self.requestDelayTimerId = null;
self._sendJsfAjaxRequest();
}, self.SEARCH_REQUEST_DELAY);
},
_sendJsfAjaxRequest: function () {
var self = this;
if (self.isRequestRunning) {
// console.log("request is running, abort");
return;
}
self.isRequestRunning = true;
self.areChangesMadeWhileRequestWasRunning = false;
self._showLoadingSpinner();
// console.log("starting request");
var id = self.$input.parent().parent().attr('id');
jsf.ajax.request(id, "autocomplete", {
"javax.faces.behavior.event": "autocomplete",
render: self.autocompleteId,
params: self.$input.val(),
onevent: function (data) {
if (data.status === "success") {
// console.log("request finished");
// only show result if input field still has focus
if (self.$input.is(":focus")) {
self._handleAutocompleteResultListVisibility();
}
self._hideLoadingSpinner();
self.isRequestRunning = false;
if (self.areChangesMadeWhileRequestWasRunning) {
// console.log("changes made while request was running, start new request automatically");
self._sendJsfAjaxRequest();
}
}
}
});
},
_handleAutocompleteResultListVisibility: function () {
var self = this;
var $autocomplete = self._getAutocompleteElement();
if ($autocomplete.find("li").length > 0) {
self._initAndShowAutocompleteResultList();
} else {
self._hideAutocompleteResultList();
}
},
_showLoadingSpinner: function () {
$('')
.appendTo(this.$input.parent());
},
_hideLoadingSpinner: function () {
this.$input.parent().find(".butter-dropdownlist-spinner").remove();
},
_initAndShowAutocompleteResultList: function () {
var self = this;
var $autocomplete = self._getAutocompleteElement();
$autocomplete
.show()
.css({
width: self.$input.innerWidth()
})
.highlight(self.$input.val());
$autocomplete.find("ul")
.on("mouseleave", function () {
self._clearResultOptionSelection();
});
$autocomplete.find("li")
.on("mousedown", function () {
self._setSelectedValue();
})
.on("mouseenter", function () {
self._selectResultOptionElement(this);
});
},
_selectResultOptionElement: function (optionElement) {
this._clearResultOptionSelection();
var $selectedOptionElement = $(optionElement);
$selectedOptionElement.addClass("butter-dropdownlist-resultItem-selected");
this.$selectedOption = $selectedOptionElement;
},
_clearResultOptionSelection: function () {
this.$selectedOption = null;
this._getAutocompleteElement()
.find(".butter-dropdownlist-resultItem-selected")
.removeClass("butter-dropdownlist-resultItem-selected");
},
_moveResultOptionElementSelectionCursor: function ($autocomplete, direction) {
if (direction > 0) {
var $next = this.$selectedOption.next();
if ($next.length > 0) {
this._selectResultOptionElement($next[0]);
} else {
//there is no next
this._selectResultOptionElement($autocomplete.find("li")[0]);
}
} else {
var $prev = this.$selectedOption.prev();
if ($prev.length > 0) {
this._selectResultOptionElement($prev[0]);
} else {
//there is no previous
var resultListOptions = $autocomplete.find("li");
this._selectResultOptionElement(resultListOptions[resultListOptions.length - 1]);
}
}
},
_setSelectedValue: function () {
if (this.$selectedOption !== null) {
this.ignoreKeyupEvent = true;
this.$input
.val(this.$selectedOption.attr("data-select-value"))
.change()
.focus()
.keyup();
this._hideAutocompleteResultList();
}
},
_hideAutocompleteResultList: function () {
if (this.requestDelayTimerId !== null) {
window.clearTimeout(this.requestDelayTimerId)
}
this.$selectedOption = null;
this._getAutocompleteElement().hide();
},
_getAutocompleteElement: function () {
return $(document.getElementById(this.autocompleteId));
},
_stopEvent: function (event) {
event.stopPropagation();
event.preventDefault();
}
});
}(jQuery));
