web-apps/apps/common/main/lib/component/ComboBoxFonts.js
2022-06-20 21:59:40 +03:00

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/*
*
* (c) Copyright Ascensio System SIA 2010-2019
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
/**
* ComboBoxFonts.js
*
* Created by Alexander Yuzhin on 2/11/14
* Copyright (c) 2018 Ascensio System SIA. All rights reserved.
*
*/
if (Common === undefined)
var Common = {};
var FONT_TYPE_RECENT = 4;
define([
'common/main/lib/component/ComboBox'
], function () {
'use strict';
Common.UI.ComboBoxFonts = Common.UI.ComboBox.extend((function() {
var iconWidth = 300,
iconHeight = Asc.FONT_THUMBNAIL_HEIGHT || 28,
thumbCanvas = document.createElement('canvas'),
thumbContext = thumbCanvas.getContext('2d'),
postfix = (/^(zh|ja|ko)$/i.test(Common.Locale.getCurrentLanguage())) ? '_ea' : '',
thumbs = [
{ratio: 1, path: '../../../../sdkjs/common/Images/fonts_thumbnail' + postfix + '.png', width: iconWidth, height: iconHeight},
{ratio: 1.25, path: '../../../../sdkjs/common/Images/fonts_thumbnail' + postfix + '@1.25x.png', width: iconWidth * 1.25, height: iconHeight * 1.25},
{ratio: 1.5, path: '../../../../sdkjs/common/Images/fonts_thumbnail' + postfix + '@1.5x.png', width: iconWidth * 1.5, height: iconHeight * 1.5},
{ratio: 1.75, path: '../../../../sdkjs/common/Images/fonts_thumbnail' + postfix + '@1.75x.png', width: iconWidth * 1.75, height: iconHeight * 1.75},
{ratio: 2, path: '../../../../sdkjs/common/Images/fonts_thumbnail' + postfix + '@2x.png', width: iconWidth * 2, height: iconHeight * 2}
],
thumbIdx = 0,
listItemHeight = 28,
spriteCols = 1,
applicationPixelRatio = Common.Utils.applicationPixelRatio();
if ( Common.Controllers.Desktop.isActive() ) {
thumbs[0].path = Common.Controllers.Desktop.call('getFontsSprite');
thumbs[1].path = Common.Controllers.Desktop.call('getFontsSprite', '@1.25x');
thumbs[2].path = Common.Controllers.Desktop.call('getFontsSprite', '@1.5x');
thumbs[3].path = Common.Controllers.Desktop.call('getFontsSprite', '@1.75x');
thumbs[4].path = Common.Controllers.Desktop.call('getFontsSprite', '@2x');
}
var bestDistance = Math.abs(applicationPixelRatio-thumbs[0].ratio);
var currentDistance = 0;
for (var i=1; i<thumbs.length; i++) {
currentDistance = Math.abs(applicationPixelRatio-thumbs[i].ratio);
if (currentDistance < (bestDistance - 0.0001))
{
bestDistance = currentDistance;
thumbIdx = i;
}
}
thumbCanvas.height = thumbs[thumbIdx].height;
thumbCanvas.width = thumbs[thumbIdx].width;
function CThumbnailLoader() {
this.supportBinaryFormat = !(Common.Controllers.Desktop.isActive() && !Common.Controllers.Desktop.isFeatureAvailable('isSupportBinaryFontsSprite'));
// наш формат - альфамаска с сжатием типа rle для полностью прозрачных пикселов
this.image = null;
this.binaryFormat = null;
this.data = null;
this.width = 0;
this.height = 0;
this.heightOne = 0;
this.count = 0;
this.offsets = null;
this.load = function(url, callback) {
if (!callback)
return;
if (!this.supportBinaryFormat) {
this.width = thumbs[thumbIdx].width;
this.heightOne = thumbs[thumbIdx].height;
this.image = new Image();
this.image.onload = callback;
this.image.src = thumbs[thumbIdx].path;
} else {
var me = this;
var xhr = new XMLHttpRequest();
xhr.open('GET', url + ".bin", true);
xhr.responseType = 'arraybuffer';
if (xhr.overrideMimeType)
xhr.overrideMimeType('text/plain; charset=x-user-defined');
else
xhr.setRequestHeader('Accept-Charset', 'x-user-defined');
xhr.onload = function() {
// TODO: check errors
me.binaryFormat = new Uint8Array(this.response);
callback();
};
xhr.send(null);
}
};
this.openBinary = function(arrayBuffer) {
//var t1 = performance.now();
var binaryAlpha = this.binaryFormat;
this.width = (binaryAlpha[0] << 24) | (binaryAlpha[1] << 16) | (binaryAlpha[2] << 8) | (binaryAlpha[3] << 0);
this.heightOne = (binaryAlpha[4] << 24) | (binaryAlpha[5] << 16) | (binaryAlpha[6] << 8) | (binaryAlpha[7] << 0);
this.count = (binaryAlpha[8] << 24) | (binaryAlpha[9] << 16) | (binaryAlpha[10] << 8) | (binaryAlpha[11] << 0);
this.height = this.count * this.heightOne;
var MAX_MEMORY_SIZE = 50000000;
var memorySize = 4 * this.width * this.height;
var isOffsets = (memorySize > MAX_MEMORY_SIZE) ? true : false;
if (!isOffsets)
this.data = new Uint8ClampedArray(memorySize);
else
this.offsets = new Array(this.count);
var binaryIndex = 12;
var binaryLen = binaryAlpha.length;
var index = 0;
var len0 = 0;
var tmpValue = 0;
if (!isOffsets) {
var imagePixels = this.data;
while (binaryIndex < binaryLen) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
while (len0 > 0) {
len0--;
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255;
imagePixels[index + 3] = 0; // this value is already 0.
index += 4;
}
} else {
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255 - tmpValue;
imagePixels[index + 3] = tmpValue;
index += 4;
}
}
} else {
var module = this.width * this.heightOne;
var moduleCur = module - 1;
while (binaryIndex < binaryLen) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
while (len0 > 0) {
len0--;
moduleCur++;
if (moduleCur === module) {
this.offsets[index++] = { pos : binaryIndex, len : len0 + 1 };
moduleCur = 0;
}
}
} else {
moduleCur++;
if (moduleCur === module) {
this.offsets[index++] = { pos : binaryIndex - 1, len : -1 };
moduleCur = 0;
}
}
}
}
if (!this.offsets)
delete this.binaryFormat;
//var t2 = performance.now();
//console.log(t2 - t1);
};
this.getImage = function(index, canvas, ctx) {
//var t1 = performance.now();
if (!canvas)
{
canvas = document.createElement("canvas");
canvas.width = this.width;
canvas.height = this.heightOne;
canvas.style.width = iconWidth + "px";
canvas.style.height = iconHeight + "px";
ctx = canvas.getContext("2d");
}
if (this.supportBinaryFormat) {
if (!this.data && !this.offsets) {
this.openBinary(this.binaryFormat);
}
var dataTmp = ctx.createImageData(this.width, this.heightOne);
var sizeImage = 4 * this.width * this.heightOne;
if (!this.offsets) {
dataTmp.data.set(new Uint8ClampedArray(this.data.buffer, index * sizeImage, sizeImage));
} else {
var binaryAlpha = this.binaryFormat;
var binaryIndex = this.offsets[index].pos;
var alphaChannel = 0;
var pixelsCount = this.width * this.heightOne;
var tmpValue = 0, len0 = 0;
var imagePixels = dataTmp.data;
if (-1 != this.offsets[index].len) {
/*
// this values is already 0.
for (var i = 0; i < this.offsets[index].len; i++) {
pixels[alphaChannel] = 0;
alphaChannel += 4;
}
*/
alphaChannel += 4 * this.offsets[index].len;
}
while (pixelsCount > 0) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
if (len0 > pixelsCount)
len0 = pixelsCount;
while (len0 > 0) {
len0--;
imagePixels[alphaChannel] = imagePixels[alphaChannel + 1] = imagePixels[alphaChannel + 2] = 255;
imagePixels[alphaChannel + 3] = 0; // this value is already 0.
alphaChannel += 4;
pixelsCount--;
}
} else {
imagePixels[alphaChannel] = imagePixels[alphaChannel + 1] = imagePixels[alphaChannel + 2] = 255 - tmpValue;
imagePixels[alphaChannel + 3] = tmpValue;
alphaChannel += 4;
pixelsCount--;
}
}
}
ctx.putImageData(dataTmp, 0, 0);
} else {
ctx.clearRect(0, 0, this.width, this.heightOne);
ctx.drawImage(this.image, 0, -this.heightOne * index);
}
//var t2 = performance.now();
//console.log(t2 - t1);
return canvas;
};
}
return {
template: _.template([
'<div class="input-group combobox fonts <%= cls %>" id="<%= id %>" style="<%= style %>">',
'<input type="text" class="form-control" spellcheck="false" data-hint="<%= dataHint %>" data-hint-direction="<%= dataHintDirection %>"> ',
'<div style="display: table-cell;"></div>',
'<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown"><span class="caret"></span></button>',
'<ul class="dropdown-menu <%= menuCls %>" style="<%= menuStyle %>" role="menu">',
'<li class="divider">',
'<% _.each(items, function(item) { %>',
'<li id="<%= item.id %>">',
'<a class="font-item" tabindex="-1" type="menuitem" style="height:<%=scope.getListItemHeight()%>px;"></a>',
'</li>',
'<% }); %>',
'</ul>',
'</div>'
].join('')),
initialize : function(options) {
Common.UI.ComboBox.prototype.initialize.call(this, _.extend(options, {
displayField: 'name',
scroller: {
wheelSpeed: 20,
alwaysVisibleY: true,
onChange: this.updateVisibleFontsTiles.bind(this)
}
}));
this.recent = _.isNumber(options.recent) ? options.recent : 5;
var filter = Common.localStorage.getKeysFilter();
this.appPrefix = (filter && filter.length) ? filter.split(',')[0] : '';
// Common.NotificationCenter.on('fonts:change', _.bind(this.onApiChangeFont, this));
Common.NotificationCenter.on('fonts:load', _.bind(this.fillFonts, this));
},
render : function(parentEl) {
var oldRawValue = null;
var oldTabindex = '';
if (!_.isUndefined(this._input)) {
oldRawValue = this._input.val();
oldTabindex = this._input.attr('tabindex');
}
Common.UI.ComboBox.prototype.render.call(this, parentEl);
this.setRawValue(oldRawValue);
this._input.attr('tabindex', oldTabindex);
this._input.on('keyup', _.bind(this.onInputKeyUp, this));
this._input.on('keydown', _.bind(this.onInputKeyDown, this));
this._input.on('focus', _.bind(function() {this.inFormControl = true;}, this));
this._input.on('blur', _.bind(function() {this.inFormControl = false;}, this));
return this;
},
onAfterKeydownMenu: function(e) {
var me = this;
if (e.keyCode == Common.UI.Keys.RETURN) {
if ($(e.target).closest('input').length) { // enter in input field
if (this.lastValue !== this._input.val())
this._input.trigger('change');
else
return true;
} else { // enter in dropdown list
$(e.target).click();
if (this.rendered) {
if (Common.Utils.isIE)
this._input.trigger('change', { onkeydown: true });
else
this._input.blur();
}
}
return false;
} else if (e.keyCode == Common.UI.Keys.ESC && this.isMenuOpen()) {
this._input.val(this.lastValue);
setTimeout(function() {
me.closeMenu();
me.onAfterHideMenu(e);
}, 10);
return false;
} else if ((e.keyCode == Common.UI.Keys.HOME && !e.shiftKey || e.keyCode == Common.UI.Keys.END && !e.shiftKey || e.keyCode == Common.UI.Keys.BACKSPACE && !me._input.is(':focus')) && this.isMenuOpen()) {
me._input.focus();
setTimeout(function() {
me._input[0].selectionStart = me._input[0].selectionEnd = (e.keyCode == Common.UI.Keys.HOME) ? 0 : me._input[0].value.length;
}, 10);
}
this.updateVisibleFontsTiles();
},
onInputKeyUp: function(e) {
if (!this._isKeyDown) return;
if (e.keyCode != Common.UI.Keys.RETURN && e.keyCode !== Common.UI.Keys.SHIFT &&
e.keyCode !== Common.UI.Keys.CTRL && e.keyCode !== Common.UI.Keys.ALT &&
e.keyCode !== Common.UI.Keys.LEFT && e.keyCode !== Common.UI.Keys.RIGHT &&
e.keyCode !== Common.UI.Keys.HOME && e.keyCode !== Common.UI.Keys.END &&
e.keyCode !== Common.UI.Keys.ESC &&
e.keyCode !== Common.UI.Keys.INSERT && e.keyCode !== Common.UI.Keys.TAB){
e.stopPropagation();
this.selectCandidate(e.keyCode == Common.UI.Keys.DELETE || e.keyCode == Common.UI.Keys.BACKSPACE);
if (this._selectedItem) {
var me = this;
if (me._timerSelection===undefined)
me._timerSelection = setInterval(function(){
if ((new Date()) - me._inInputKeyDown<100 || !me._selectedItem) return;
clearInterval(me._timerSelection);
me._timerSelection = undefined;
var input = me._input[0],
text = me._selectedItem.get(me.displayField),
inputVal = input.value;
if (me.rendered) {
if (document.selection) { // IE
document.selection.createRange().text = text;
} else if (input.selectionStart || input.selectionStart == '0') { //FF и Webkit
input.value = text;
input.selectionStart = inputVal.length;
input.selectionEnd = text.length;
}
}
}, 10);
}
}
this._isKeyDown = false;
},
onInputKeyDown: function(e) {
this._isKeyDown = true;
this._inInputKeyDown = (new Date());
var me = this;
if (e.keyCode == Common.UI.Keys.ESC){
this._input.val(this.lastValue);
setTimeout(function() {
me.closeMenu();
me.onAfterHideMenu(e);
}, 10);
} else if (e.keyCode != Common.UI.Keys.RETURN && e.keyCode != Common.UI.Keys.CTRL && e.keyCode != Common.UI.Keys.SHIFT && e.keyCode != Common.UI.Keys.ALT && e.keyCode != Common.UI.Keys.TAB){
if (!this.isMenuOpen() && !e.ctrlKey) {
this.openMenu();
(this.recent > 0) && this.flushVisibleFontsTiles();
}
if (e.keyCode == Common.UI.Keys.UP || e.keyCode == Common.UI.Keys.DOWN) {
_.delay(function() {
var selected = (e.keyCode == Common.UI.Keys.DOWN) ? me.cmpEl.find('ul li.selected').nextAll('li:not(.divider)') : me.cmpEl.find('ul li.selected').prevAll('li:not(.divider)');
selected = (selected.length>0) ? selected.eq(0) : ((e.keyCode == Common.UI.Keys.DOWN) ? me.cmpEl.find('ul li:not(.divider):first') : me.cmpEl.find('ul li:not(.divider):last'));
selected = selected.find('a');
me._skipInputChange = true;
selected.focus();
me.updateVisibleFontsTiles();
}, 10);
} else
me._skipInputChange = false;
} else if (e.keyCode == Common.UI.Keys.RETURN && this._input.val() === me.lastValue){
this._input.trigger('change', { reapply: true });
}
},
onInputChanged: function(e, extra) {
// skip processing for internally-generated synthetic event
// to avoid double processing
if (extra && extra.synthetic)
return;
if (this._skipInputChange) {
this._skipInputChange = false; return;
}
if (this._isMouseDownMenu) {
this._isMouseDownMenu = false; return;
}
var val = $(e.target).val(),
record = {};
if (this.lastValue === val && !(extra && extra.reapply)) {
if (extra && extra.onkeydown)
this.trigger('combo:blur', this, e);
return;
}
record[this.valueField] = val;
record[this.displayField] = val;
this.trigger('changed:before', this, record, e);
if (e.isDefaultPrevented())
return;
if (this._selectedItem) {
record[this.valueField] = this._selectedItem.get(this.displayField);
this.setRawValue(record[this.valueField]);
this.trigger('selected', this, _.extend({}, this._selectedItem.toJSON()), e);
this.addItemToRecent(this._selectedItem);
this.closeMenu();
} else {
this.setRawValue(record[this.valueField]);
record['isNewFont'] = true;
this.trigger('selected', this, record, e);
this.closeMenu();
}
// trigger changed event
this.trigger('changed:after', this, record, e);
},
getImageUri: function(opts) {
if (opts.cloneid) {
var img = $(this.el).find('ul > li#'+opts.cloneid + ' img');
return img != null ? img[0].src : undefined;
}
var index = Math.floor(opts.imgidx/spriteCols);
return this.spriteThumbs.getImage(index, thumbCanvas, thumbContext).toDataURL();
},
getImageWidth: function() {
return iconWidth;
},
getImageHeight: function() {
return iconHeight;
},
getListItemHeight: function() {
return listItemHeight;
},
loadSprite: function(callback) {
this.spriteThumbs = new CThumbnailLoader();
this.spriteThumbs.load(thumbs[thumbIdx].path, callback);
},
fillFonts: function(store, select) {
var me = this;
this.loadSprite(function() {
spriteCols = Math.floor(me.spriteThumbs.width / (thumbs[thumbIdx].width)) || 1;
me.store.set(store.toJSON());
me.rendered = false;
if (!_.isUndefined(me.scroller)) {
me.scroller.destroy();
delete me.scroller;
}
me._scrollerIsInited = false;
me.render($(me.el));
me._fontsArray = me.store.toJSON();
if (me.recent > 0) {
me.store.on('add', me.onInsertItem, me);
me.store.on('remove', me.onRemoveItem, me);
Common.Utils.InternalSettings.set(me.appPrefix + "-settings-recent-fonts", Common.localStorage.getItem(me.appPrefix + "-settings-recent-fonts"));
var arr = Common.Utils.InternalSettings.get(me.appPrefix + "-settings-recent-fonts");
arr = arr ? arr.split(';') : [];
arr.reverse().forEach(function(item) {
item && me.addItemToRecent(me.store.findWhere({name: item}), true);
});
}
});
},
onApiChangeFont: function(font) {
var me = this;
var name = (_.isFunction(font.get_Name) ? font.get_Name() : font.asc_getFontName());
if (this.__name !== name) {
this.__name = name;
if (!this.__nameId) {
this.__nameId = setTimeout(function () {
me.onApiChangeFontInternal(me.__name);
me.__nameId = null;
}, 100);
}
}
},
onApiChangeFontInternal: function(name) {
if (this.inFormControl) return;
if (this.getRawValue() !== name) {
var record = this.store.findWhere({
name: name
});
$('.selected', $(this.el)).removeClass('selected');
if (record) {
this.setRawValue(record.get(this.displayField));
var itemNode = $('#' + record.get('id'), $(this.el)),
menuNode = $('ul.dropdown-menu', this.cmpEl);
if (itemNode && menuNode) {
itemNode.addClass('selected');
if (this.recent<=0)
menuNode.scrollTop(itemNode.offset().top - menuNode.offset().top);
}
} else {
this.setRawValue(name);
}
}
},
itemClicked: function (e) {
this.__name = undefined;
if (this.__nameId) {
clearTimeout(this.__nameId);
this.__nameId = undefined;
}
Common.UI.ComboBox.prototype.itemClicked.apply(this, arguments);
var el = $(e.target).closest('li');
var record = this.store.findWhere({id: el.attr('id')});
this.addItemToRecent(record);
},
onInsertItem: function(item) {
$(this.el).find('ul').prepend(_.template([
'<li id="<%= item.id %>">',
'<a class="font-item" tabindex="-1" type="menuitem" style="height:<%=scope.getListItemHeight()%>px;"></a>',
'</li>'
].join(''))({
item: item.attributes,
scope: this
}));
},
onRemoveItem: function(item, store, opts) {
$(this.el).find('ul > li#'+item.id).remove();
},
onBeforeShowMenu: function(e) {
if (this.store.length<1) {
e.preventDefault();
return;
}
Common.UI.ComboBox.prototype.onBeforeShowMenu.apply(this, arguments);
if (!this.getSelectedRecord() && !!this.getRawValue()) {
var record = this.store.where({name: this.getRawValue()});
if (record && record.length) {
this.selectRecord(record[record.length - 1]);
}
}
},
onAfterShowMenu: function(e) {
if (this.recent > 0) {
if (this.scroller && !this._scrollerIsInited) {
this.scroller.update();
this._scrollerIsInited = true;
}
$(this.el).find('ul').scrollTop(0);
this.trigger('show:after', this, e);
this.flushVisibleFontsTiles();
this.updateVisibleFontsTiles(null, 0);
Common.Utils.isGecko && this.scroller && this.scroller.update();
} else {
Common.UI.ComboBox.prototype.onAfterShowMenu.apply(this, arguments);
}
},
onAfterHideMenu: function(e) {
if (this.lastValue !== this._input.val())
this._input.val(this.lastValue);
Common.UI.ComboBox.prototype.onAfterHideMenu.apply(this, arguments);
},
addItemToRecent: function(record, silent) {
if (!record || this.recent<1) return;
var font = this.store.findWhere({name: record.get('name'),type:FONT_TYPE_RECENT});
font && this.store.remove(font);
var fonts = this.store.where({type:FONT_TYPE_RECENT});
if (!(fonts.length < this.recent)) {
this.store.remove(fonts[this.recent - 1]);
}
var new_record = record.clone();
new_record.set({'type': FONT_TYPE_RECENT, 'id': Common.UI.getId(), cloneid: record.id});
this.store.add(new_record, {at:0});
if (!silent) {
var arr = [];
this.store.where({type:FONT_TYPE_RECENT}).forEach(function(item){
arr.push(item.get('name'));
});
arr = arr.join(';');
Common.localStorage.setItem(this.appPrefix + "-settings-recent-fonts", arr);
Common.Utils.InternalSettings.set(this.appPrefix + "-settings-recent-fonts", arr);
}
},
selectCandidate: function(full) {
var me = this,
inputVal = this._input.val().toLowerCase();
if (!this._fontsArray)
this._fontsArray = this.store.toJSON();
var font = _.find(this._fontsArray, function(font) {
return (full) ? (font[me.displayField].toLowerCase() == inputVal) : (font[me.displayField].toLowerCase().indexOf(inputVal) == 0)
});
if (font) {
this._selectedItem = this.store.findWhere({
id: font.id
});
} else
this._selectedItem = null;
$('.selected', $(this.el)).removeClass('selected');
if (this._selectedItem) {
var itemNode = $('#' + this._selectedItem.get('id'), $(this.el)),
menuEl = $('ul[role=menu]', $(this.el));
if (itemNode.length > 0 && menuEl.length > 0) {
itemNode.addClass('selected');
var itemTop = itemNode.position().top,
menuTop = menuEl.scrollTop();
if (itemTop != 0)
menuEl.scrollTop(menuTop + itemTop);
}
}
},
updateVisibleFontsTiles: function(e, scrollY) {
var me = this, j = 0, storeCount = me.store.length, index = 0;
if (!me.tiles) me.tiles = [];
if (storeCount !== me.tiles.length) {
for (j = me.tiles.length; j < storeCount; ++j) {
me.tiles.unshift(null);
}
}
if (_.isUndefined(scrollY)) scrollY = parseInt($(me.el).find('.ps-scrollbar-x-rail').css('bottom'));
var scrollH = $(me.el).find('.dropdown-menu').height(),
count = Math.max(Math.floor(scrollH / listItemHeight) + 3, 0),
from = Math.max(Math.floor(-(scrollY / listItemHeight)) - 1, 0),
to = from + count;
var listItems = $(me.el).find('a');
for (j = 0; j < storeCount; ++j) {
if (from <= j && j < to) {
if (null === me.tiles[j]) {
index = Math.floor(me.store.at(j).get('imgidx')/spriteCols);
var fontImage = me.spriteThumbs.getImage(index);
me.tiles[j] = fontImage;
$(listItems[j]).get(0).appendChild(fontImage);
}
} else {
if (me.tiles[j]) {
me.tiles[j].parentNode.removeChild(me.tiles[j]);
me.tiles[j] = null;
}
}
}
},
flushVisibleFontsTiles: function() {
for (var j = this.tiles.length - 1; j >= 0; --j) {
if (this.tiles[j]) {
this.tiles[j].parentNode.removeChild(this.tiles[j]);
this.tiles[j] = null;
}
}
}
}
})());
});