big-moving.ru/api/soft/ajaxorg/lib/ace/layer/lines.js

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2022-06-24 15:29:23 +05:00
/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2010, Ajax.org B.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Ajax.org B.V. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
define(function(require, exports, module) {
"use strict";
var dom = require("../lib/dom");
var Lines = function(element, canvasHeight) {
this.element = element;
this.canvasHeight = canvasHeight || 500000;
this.element.style.height = (this.canvasHeight * 2) + "px";
this.cells = [];
this.cellCache = [];
this.$offsetCoefficient = 0;
};
(function() {
this.moveContainer = function(config) {
dom.translate(this.element, 0, -((config.firstRowScreen * config.lineHeight) % this.canvasHeight) - config.offset * this.$offsetCoefficient);
};
this.pageChanged = function(oldConfig, newConfig) {
return (
Math.floor((oldConfig.firstRowScreen * oldConfig.lineHeight) / this.canvasHeight) !==
Math.floor((newConfig.firstRowScreen * newConfig.lineHeight) / this.canvasHeight)
);
};
this.computeLineTop = function(row, config, session) {
var screenTop = config.firstRowScreen * config.lineHeight;
var screenPage = Math.floor(screenTop / this.canvasHeight);
var lineTop = session.documentToScreenRow(row, 0) * config.lineHeight;
return lineTop - (screenPage * this.canvasHeight);
};
this.computeLineHeight = function(row, config, session) {
return config.lineHeight * session.getRowLength(row);
};
this.getLength = function() {
return this.cells.length;
};
this.get = function(index) {
return this.cells[index];
};
this.shift = function() {
this.$cacheCell(this.cells.shift());
};
this.pop = function() {
this.$cacheCell(this.cells.pop());
};
this.push = function(cell) {
if (Array.isArray(cell)) {
this.cells.push.apply(this.cells, cell);
var fragment = dom.createFragment(this.element);
for (var i=0; i<cell.length; i++) {
fragment.appendChild(cell[i].element);
}
this.element.appendChild(fragment);
} else {
this.cells.push(cell);
this.element.appendChild(cell.element);
}
};
this.unshift = function(cell) {
if (Array.isArray(cell)) {
this.cells.unshift.apply(this.cells, cell);
var fragment = dom.createFragment(this.element);
for (var i=0; i<cell.length; i++) {
fragment.appendChild(cell[i].element);
}
if (this.element.firstChild)
this.element.insertBefore(fragment, this.element.firstChild);
else
this.element.appendChild(fragment);
} else {
this.cells.unshift(cell);
this.element.insertAdjacentElement("afterbegin", cell.element);
}
};
this.last = function() {
if (this.cells.length)
return this.cells[this.cells.length-1];
else
return null;
};
this.$cacheCell = function(cell) {
if (!cell)
return;
cell.element.remove();
this.cellCache.push(cell);
};
this.createCell = function(row, config, session, initElement) {
var cell = this.cellCache.pop();
if (!cell) {
var element = dom.createElement("div");
if (initElement)
initElement(element);
this.element.appendChild(element);
cell = {
element: element,
text: "",
row: row
};
}
cell.row = row;
return cell;
};
}).call(Lines.prototype);
exports.Lines = Lines;
});