136 regels
3.1 KiB
JavaScript
Executable File
136 regels
3.1 KiB
JavaScript
Executable File
/**
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* DragHelper.js
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*
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* Copyright, Moxiecode Systems AB
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* Released under LGPL License.
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*
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* License: http://www.tinymce.com/license
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* Contributing: http://www.tinymce.com/contributing
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*/
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/**
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* Drag/drop helper class.
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*
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* @example
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* var dragHelper = new tinymce.ui.DragHelper('mydiv', {
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* start: function(evt) {
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* },
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*
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* drag: function(evt) {
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* },
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*
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* end: function(evt) {
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* }
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* });
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*
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* @class tinymce.ui.DragHelper
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*/
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define("tinymce/ui/DragHelper", [
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"tinymce/ui/DomUtils"
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], function(DomUtils) {
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"use strict";
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function getDocumentSize() {
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var doc = document, documentElement, body, scrollWidth, clientWidth;
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var offsetWidth, scrollHeight, clientHeight, offsetHeight, max = Math.max;
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documentElement = doc.documentElement;
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body = doc.body;
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scrollWidth = max(documentElement.scrollWidth, body.scrollWidth);
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clientWidth = max(documentElement.clientWidth, body.clientWidth);
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offsetWidth = max(documentElement.offsetWidth, body.offsetWidth);
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scrollHeight = max(documentElement.scrollHeight, body.scrollHeight);
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clientHeight = max(documentElement.clientHeight, body.clientHeight);
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offsetHeight = max(documentElement.offsetHeight, body.offsetHeight);
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return {
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width: scrollWidth < offsetWidth ? clientWidth : scrollWidth,
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height: scrollHeight < offsetHeight ? clientHeight : scrollHeight
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};
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}
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return function(id, settings) {
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var eventOverlayElm, doc = document, downButton, start, stop, drag, startX, startY;
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settings = settings || {};
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function getHandleElm() {
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return doc.getElementById(settings.handle || id);
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}
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start = function(e) {
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var docSize = getDocumentSize(), handleElm, cursor;
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e.preventDefault();
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downButton = e.button;
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handleElm = getHandleElm();
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startX = e.screenX;
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startY = e.screenY;
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// Grab cursor from handle
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if (window.getComputedStyle) {
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cursor = window.getComputedStyle(handleElm, null).getPropertyValue("cursor");
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} else {
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cursor = handleElm.runtimeStyle.cursor;
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}
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// Create event overlay and add it to document
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eventOverlayElm = doc.createElement('div');
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DomUtils.css(eventOverlayElm, {
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position: "absolute",
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top: 0, left: 0,
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width: docSize.width,
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height: docSize.height,
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zIndex: 0x7FFFFFFF,
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opacity: 0.0001,
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background: 'red',
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cursor: cursor
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});
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doc.body.appendChild(eventOverlayElm);
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// Bind mouse events
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DomUtils.on(doc, 'mousemove', drag);
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DomUtils.on(doc, 'mouseup', stop);
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// Begin drag
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settings.start(e);
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};
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drag = function(e) {
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if (e.button !== downButton) {
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return stop(e);
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}
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e.deltaX = e.screenX - startX;
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e.deltaY = e.screenY - startY;
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e.preventDefault();
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settings.drag(e);
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};
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stop = function(e) {
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DomUtils.off(doc, 'mousemove', drag);
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DomUtils.off(doc, 'mouseup', stop);
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eventOverlayElm.parentNode.removeChild(eventOverlayElm);
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if (settings.stop) {
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settings.stop(e);
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}
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};
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/**
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* Destroys the drag/drop helper instance.
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*
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* @method destroy
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*/
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this.destroy = function() {
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DomUtils.off(getHandleElm());
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};
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DomUtils.on(getHandleElm(), 'mousedown', start);
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};
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}); |