mirror of
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703 lines
22 KiB
JavaScript
Executable File
703 lines
22 KiB
JavaScript
Executable File
/**
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* library for ajaxcourse formats, the classes and related functions for
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* sections and resources.
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*
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* This library requires a 'main' object created in calling document.
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*
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* Drag and drop notes:
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*
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* Dropping an activity or resource on a section will always add the activity
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* or resource at the end of that section.
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*
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* Dropping an activity or resource on another activity or resource will
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* always move the former just above the latter.
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*
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* $Id$
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*/
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/**
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* section_class
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*/
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function section_class(id, group, config, isDraggable) {
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this.init_section(id, group, config, isDraggable);
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}
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YAHOO.extend(section_class, YAHOO.util.DDProxy);
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section_class.prototype.debug = false;
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section_class.prototype.init_section = function(id, group, config, isDraggable) {
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if (!id) {
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return;
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}
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this.is = 'section';
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this.sectionId = null; // Section number. This is NOT the section id from
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// the database.
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if (!isDraggable) {
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this.initTarget(id, group, config);
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this.removeFromGroup('sections');
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} else {
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this.init(id, group, config);
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this.handle = null;
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}
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this.createFrame();
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this.isTarget = true;
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this.resources = [];
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this.numberDisplay = null; // Used to display the section number on the top left
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// of the section. Not used in all course formats.
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this.summary = null;
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this.content_td = null;
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this.hidden = false;
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this.highlighted = false;
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this.showOnly = false;
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this.resources_ul = null;
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this.process_section();
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this.viewButton = null;
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this.highlightButton = null;
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this.showOnlyButton = null;
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this.init_buttons();
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if (isDraggable) {
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this.add_handle();
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}
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if (this.debug) {
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YAHOO.log("init_section "+id+" draggable="+isDraggable);
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}
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if (YAHOO.util.Dom.hasClass(this.getEl(),'hidden')) {
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this.toggle_hide(null,null,true);
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}
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}
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section_class.prototype.init_buttons = function() {
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var commandContainer = this.getEl().childNodes[2];
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//clear all but show only button
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var commandContainerCount = commandContainer.childNodes.length;
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for (var i=(commandContainerCount-1); i>0; i--) {
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commandContainer.removeChild(commandContainer.childNodes[i])
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}
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if (!this.isWeekFormat) {
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var highlightbutton = main.mk_button('div', '/pix/i/marker.gif');
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YAHOO.util.Event.addListener(highlightbutton, 'click', this.mk_marker, this, true);
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commandContainer.appendChild(highlightbutton);
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this.highlightButton = highlightbutton;
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}
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var viewbutton = main.mk_button('div', '/pix/i/hide.gif');
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YAHOO.util.Event.addListener(viewbutton, 'click', this.toggle_hide, this,true);
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commandContainer.appendChild(viewbutton);
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this.viewButton = viewbutton;
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}
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section_class.prototype.add_handle = function() {
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var handleRef = main.mk_button('a', '/pix/i/move_2d.gif', [['style','cursor:move']]);
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YAHOO.util.Dom.generateId(handleRef, 'sectionHandle');
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this.handle = handleRef;
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this.getEl().childNodes[0].appendChild(handleRef);
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this.setHandleElId(this.handle.id);
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}
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section_class.prototype.process_section = function() {
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this.content_td = this.getEl().childNodes[1];
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if (YAHOO.util.Dom.hasClass(this.getEl(),'current')) {
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this.highlighted = true;
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main.marker = this;
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}
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//create holder for display number for access later
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this.numberDisplay = document.createElement('div');
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this.numberDisplay.innerHTML = this.getEl().childNodes[0].innerHTML;
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this.getEl().childNodes[0].innerHTML = '';
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this.getEl().childNodes[0].appendChild(this.numberDisplay);
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this.sectionId = this.id.replace(/section-/i, ''); // Okay, we will have to change this if we
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// ever change the id attributes format
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// for the sections.
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if (this.debug)YAHOO.log("Creating section "+this.getEl().id+" in position "+this.sectionId);
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//find/edit resources
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this.resources_ul = this.content_td.getElementsByTagName('ul')[0];
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if (this.resources_ul == null) {
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this.resources_ul = document.createElement('ul');
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this.resources_ul.className='section';
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this.content_td.insertBefore(this.resources_ul, this.content_td.childNodes[1]);
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}
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var resource_count = this.resources_ul.getElementsByTagName('li').length;
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for (var i=0;i<resource_count;i++) {
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var resource = this.resources_ul.getElementsByTagName('li')[i];
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if (YAHOO.util.Dom.hasClass(resource, 'resource')) {
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this.resources[this.resources.length] = new resource_class(resource.id, 'resources', null, this);
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if (this.debug) {
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YAHOO.log("Found resource");
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}
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} else {
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this.resources[this.resources.length] = new activity_class(resource.id, 'resources', null, this);
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}
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}
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this.summary = YAHOO.util.Dom.getElementsByClassName('summary', null, this.getEl())[0].firstChild.data || '';
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}
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section_class.prototype.startDrag = function(x, y) {
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//operates in point mode
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YAHOO.util.DDM.mode = YAHOO.util.DDM.POINT;
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//remove from resources group temporarily
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this.removeFromGroup('resources');
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//reinitialize dd element
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this.getDragEl().innerHTML = '';
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var targets = YAHOO.util.DDM.getRelated(this, true);
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if (this.debug)YAHOO.log(this.id + " startDrag, "+targets.length + " targets");
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}
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section_class.prototype.onDragDrop = function(e, id) {
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// get the drag and drop object that was targeted
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var target = YAHOO.util.DDM.getDDById(id);
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if (this.debug)YAHOO.log("Section dropped on id="+id+" (I am "+this.getEl().id+") x="+YAHOO.util.Dom.getXY(this.getDragEl()));
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this.move_to_section(target);
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//add back to resources group
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this.addToGroup('resources');
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}
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section_class.prototype.endDrag = function() {
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//nessicary to defeat default action
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//add back to resources group
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this.addToGroup('resources');
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}
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section_class.prototype.move_to_section = function(target) {
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var tempTd = document.createElement('td');
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var tempStore = null;
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var sectionCount = main.sections.length;
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var found = null;
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//determine if original is above or below target and adjust loop
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var oIndex=main.get_section_index(this);
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var tIndex=main.get_section_index(target);
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if (this.debug)YAHOO.log("original is at: "+oIndex+" target is at:"+tIndex+" of "+(sectionCount-1));
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if (oIndex < tIndex) {
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var loopCondition = 'i<sectionCount';
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var loopStart = 1;
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var loopInc = 'i++';
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var loopmodifier = 'i-1';
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} else {
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var loopCondition = 'i>0';
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var loopStart = sectionCount-1;
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var loopInc = 'i--';
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var loopmodifier = 'i+1';
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}
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//move on backend
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main.connect('post','class=section&field=move',null,'id='+this.sectionId+'&value='+(target.sectionId-this.sectionId));
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//move on front end
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for (var i=loopStart; eval(loopCondition); eval(loopInc)) {
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if ((main.sections[i] == this)&& !found) {
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//enounter with original node
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if (this.debug)YAHOO.log("Found Original "+main.sections[i].getEl().id);
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if (main.sections[i] == this) {
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found = true;
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}
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} else if (main.sections[i] == target) {
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//encounter with target node
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if (this.debug)YAHOO.log("Found target "+main.sections[i].getEl().id);
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main.sections[i].swap_with_section(main.sections[eval(loopmodifier)]);
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found = false;
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break;
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} else if (found) {
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//encounter with nodes inbetween
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main.sections[i].swap_with_section(main.sections[eval(loopmodifier)]);
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}
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}
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}
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section_class.prototype.swap_with_section = function(sectionIn) {
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var tmpStore = null;
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thisIndex = main.get_section_index(this);
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targetIndex = main.get_section_index(sectionIn);
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main.sections[targetIndex] = this;
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main.sections[thisIndex] = sectionIn;
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this.changeId(targetIndex);
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sectionIn.changeId(thisIndex);
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if (this.debug)YAHOO.log("Swapping "+this.getEl().id+" with "+sectionIn.getEl().id);
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YAHOO.util.DDM.swapNode(this.getEl(), sectionIn.getEl());
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}
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section_class.prototype.toggle_hide = function(e,target,superficial) {
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if (this.hidden) {
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YAHOO.util.Dom.removeClass(this.getEl(),'hidden');
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this.viewButton.childNodes[0].src = this.viewButton.childNodes[0].src.replace(/show.gif/i,'hide.gif');
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this.hidden = false;
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if (!superficial) {
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main.connect('post','class=section&field=visible',null,'value=1&id='+this.sectionId);
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for (var x=0;x<this.resources.length;x++) {
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this.resources[x].toggle_hide(null,null,true,this.resources[x].hiddenStored);
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this.resources[x].hiddenStored = null;
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}
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}
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} else {
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YAHOO.util.Dom.addClass(this.getEl(),'hidden');
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this.viewButton.childNodes[0].src = this.viewButton.childNodes[0].src.replace(/hide.gif/i,'show.gif');
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this.hidden = true;
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if (!superficial) {
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main.connect('post','class=section&field=visible',null,'value=0&id='+this.sectionId);
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for (var x=0;x<this.resources.length;x++) {
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this.resources[x].hiddenStored = this.resources[x].hidden;
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this.resources[x].toggle_hide(null,null,true,true);
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}
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}
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}
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}
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section_class.prototype.toggle_highlight = function() {
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if (this.highlighted) {
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YAHOO.util.Dom.removeClass(this.getEl(),'current');
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this.highlighted = false;
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} else {
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YAHOO.util.Dom.addClass(this.getEl(),'current');
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this.highlighted = true;
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}
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}
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section_class.prototype.mk_marker = function() {
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if (main.marker != this) {
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main.update_marker(this);
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} else {//if currently the marker
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main.marker = null;
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main.connect('post','class=course&field=marker',null,'value=0');
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this.toggle_highlight();
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}
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}
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section_class.prototype.changeId = function(newId) {
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this.sectionId = newId;
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this.numberDisplay.firstChild.data = newId;
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//main.connectQueue_add('post','class=section&field=all',null,'id='+newId+"&summary="+main.mk_safe_for_transport(this.summary)+"&sequence="+this.write_sequence_list(true)+'&visible='+(this.hidden?0:1))
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if (main.marker == this) {
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main.update_marker(this);
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}
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}
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section_class.prototype.get_resource_index = function(el) {
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for (var x=0;x<this.resources.length;x++) {
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if (this.resources[x]==el) {
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return x;
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}
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}
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YAHOO.log("Could not find resource to remove "+el.getEl().id,"error");
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return -1;
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}
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section_class.prototype.remove_resource = function(el) {
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var resourceCount = this.resources.length;
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if (resourceCount == 1) {
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if (this.resources[0] == el)
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this.resources = new Array();
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} else {
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var found = false;
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for (var i=0;i<resourceCount;i++) {
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if (found) {
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this.resources[i-1] = this.resources[i];
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if (i==resourceCount-1) {
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this.resources = this.resources.slice(0,-1);
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resourceCount--;
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}
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this.resources[i-1].update_index(i-1);
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} else if (this.resources[i]==el) {
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found = true;
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}
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}
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}
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//remove "text" nodes to keep DOM clean
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var childIndex = null;
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var childrenCount = this.resources_ul.childNodes.length;
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for (var i=0;i<childrenCount;i++)
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if (this.resources_ul.childNodes[i] == el.getEl())
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childIndex = i;
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if (childIndex > 0 && childIndex < this.resources_ul.childNodes.length)
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this.resources_ul.removeChild(this.resources_ul.childNodes[childIndex-1]);
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YAHOO.log("removing "+el.getEl().id);
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if (el.getEl().parentNode != null)
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el.getEl().parentNode.removeChild(el.getEl());
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this.write_sequence_list();
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}
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section_class.prototype.insert_resource = function(el, targetel) {
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var resourcecount = this.resources.length;
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var found = false;
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var tempStore = nextStore = null;
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//update in backend
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targetId = '';
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if (targetel != null) {
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targetId = targetel.id;
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}
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main.connect('post', 'class=resource&field=move', null,
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'id='+el.id+'&beforeId='+targetId
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+'§ionId='+this.sectionId);
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//if inserting into a hidden resource hide
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if (this.hidden) {
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el.hiddenStored = el.hidden;
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el.toggle_hide(null,null,true,true);
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} else {
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if (el.hiddenStored != null) {
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el.toggle_hide(null,null,true,el.hiddenStored);
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el.hiddenStored = null;
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}
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}
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//update model
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if (targetel == null) {
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this.resources[this.resources.length] = el;
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} else {
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for (var i=0;i<resourcecount;i++) {
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if (found) {
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tempStore = this.resources[i];
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this.resources[i] = nextStore;
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nextStore = tempStore;
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if (nextStore != null)
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nextStore.update_index(i+1);
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} else if (this.resources[i] == targetel) {
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found = true;
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nextStore = this.resources[i];
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this.resources[i] = el;
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resourcecount++;
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this.resources[i].update_index(i,this.ident);
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nextStore.update_index(i+1);
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}
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}
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}
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//update on frontend
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if (targetel != null) {
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this.resources_ul.insertBefore(el.getEl(),targetel.getEl());
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this.resources_ul.insertBefore(document.createTextNode(''),targetel.getEl());
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} else {
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this.resources_ul.appendChild(el.getEl());
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this.resources_ul.appendChild(document.createTextNode(" "));
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}
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el.parentObj = this;
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}
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section_class.prototype.write_sequence_list = function(toReturn) {
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var listOutput = '';
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for (var i=0;i<this.resources.length;i++) {
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listOutput += this.resources[i].id;
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if (i != (this.resources.length-1)) {
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listOutput += ',';
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}
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}
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if (toReturn) {
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return listOutput;
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}
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}
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/**
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* resource_class extends util.DDProxy
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*/
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function resource_class(id,group,config,parentObj) {
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this.init_resource(id,group,config,parentObj);
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}
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YAHOO.extend(resource_class, YAHOO.util.DDProxy);
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resource_class.prototype.debug = false;
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resource_class.prototype.init_resource = function(id,group,config,parentObj) {
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if (!id) {
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YAHOO.log("Init resource, NO ID FOUND!",'error');
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return;
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}
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this.is = 'resource';
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this.init(id,group,config);
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this.createFrame();
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this.isTarget = true;
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this.id = this.getEl().id.replace(/module-/i,'');
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this.hidden = false;
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if (YAHOO.util.Dom.hasClass(this.getEl().getElementsByTagName('a')[0],'dimmed')) {
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this.hidden = true;
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}
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this.hiddenStored = null;
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this.linkContainer = this.getEl().getElementsByTagName('a')[0];
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this.commandContainer = null;
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this.viewButton = null;
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this.handle = null;
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this.init_buttons();
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this.parentObj = parentObj;
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if (this.debug) {
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YAHOO.log("init_resource "+id+" parent = "+parentObj.getEl().id);
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}
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}
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resource_class.prototype.init_buttons = function() {
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var commandContainer = YAHOO.util.Dom.getElementsByClassName('commands','span',this.getEl())[0];
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if ( commandContainer == null) {
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YAHOO.log('Cannot find command container for '+this.getEl().id,'error');
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return;
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}
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this.commandContainer = commandContainer;
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//find edit button
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var updateButton = null;
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var buttons = commandContainer.getElementsByTagName('a');
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for (var x=0;x<buttons.length;x++) {
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if (buttons[x].title == main.portal.strings['update']) {
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updateButton = buttons[x];
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}
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}
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if (updateButton == null)
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YAHOO.log('Cannot find updateButton for '+this.getEl().id,'error');
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commandContainer.innerHTML = '';
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//add move-handle
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var handleRef = main.mk_button('a','/pix/i/move_2d.gif',[['style','cursor:move']],[['height','11'],['width','11'],['hspace','2'],['border','0']]);
|
|
YAHOO.util.Dom.generateId(handleRef,'sectionHandle');
|
|
this.handle = handleRef;
|
|
commandContainer.appendChild(handleRef);
|
|
this.setHandleElId(this.handle.id);
|
|
|
|
//add edit button back in
|
|
commandContainer.appendChild(updateButton);
|
|
|
|
//add rest
|
|
var button = main.mk_button('a','/pix/t/delete.gif');
|
|
YAHOO.util.Event.addListener(button,'click',this.delete_button,this,true);
|
|
commandContainer.appendChild(button);
|
|
|
|
if (this.hidden) {
|
|
var button = main.mk_button('a','/pix/t/show.gif');
|
|
} else {
|
|
var button = main.mk_button('a','/pix/t/hide.gif');
|
|
}
|
|
YAHOO.util.Event.addListener(button,'click',this.toggle_hide,this,true);
|
|
commandContainer.appendChild(button);
|
|
this.viewButton = button;
|
|
}
|
|
|
|
resource_class.prototype.toggle_hide = function(target,e,superficial,force) {
|
|
if (force != null) {
|
|
if (this.debug)YAHOO.log("Resource "+this.getEl().id+" forced to "+force);
|
|
this.hidden = !force;
|
|
}
|
|
|
|
if (this.hidden) {
|
|
YAHOO.util.Dom.removeClass(this.linkContainer,'dimmed');
|
|
this.viewButton.childNodes[0].src = this.viewButton.childNodes[0].src.replace(/show.gif/i,'hide.gif');
|
|
this.hidden = false;
|
|
|
|
if (!superficial) {
|
|
main.connect('post','class=resource&field=visible',null,'value=1&id='+this.id);
|
|
}
|
|
} else {
|
|
YAHOO.util.Dom.addClass(this.linkContainer,'dimmed');
|
|
this.viewButton.childNodes[0].src = this.viewButton.childNodes[0].src.replace(/hide.gif/i,'show.gif');
|
|
this.hidden = true;
|
|
|
|
if (!superficial) {
|
|
main.connect('post','class=resource&field=visible',null,'value=0&id='+this.id);
|
|
}
|
|
}
|
|
}
|
|
|
|
resource_class.prototype.delete_button = function() {
|
|
if (this.debug) {
|
|
YAHOO.log("Deleting "+this.getEl().id+"from parent "+this.parentObj.getEl().id);
|
|
}
|
|
if (!confirm(main.getString('deletecheck',main.getString(this.is)+" "+this.id))) {
|
|
return false;
|
|
}
|
|
this.getEl().parentNode.removeChild(this.getEl());
|
|
this.parentObj.remove_resource(this);
|
|
|
|
main.connect('delete','class=resource&id='+this.id);
|
|
}
|
|
|
|
resource_class.prototype.update_index = function(index) {
|
|
if (this.debug) {
|
|
YAHOO.log("update Index for resource "+this.getEl().id+"to"+index);
|
|
}
|
|
}
|
|
|
|
resource_class.prototype.startDrag = function(x, y) {
|
|
YAHOO.util.DDM.mode = YAHOO.util.DDM.INTERSECT;
|
|
|
|
//reinitialize dd element
|
|
this.getDragEl().innerHTML = '';
|
|
|
|
var targets = YAHOO.util.DDM.getRelated(this, true);
|
|
if (this.debug) {
|
|
YAHOO.log(this.id + " startDrag "+targets.length + " targets");
|
|
}
|
|
}
|
|
|
|
resource_class.prototype.clear_move_markers = function(target) {
|
|
if (target.is == 'section') {
|
|
resources = target.resources;
|
|
} else {
|
|
resources = target.parentObj.resources;
|
|
}
|
|
for (var i=0; i<resources.length; i++) {
|
|
YAHOO.util.Dom.setStyle(resources[i].getEl().id, 'border', 'none');
|
|
}
|
|
}
|
|
|
|
resource_class.prototype.onDragOver = function(e, ids) {
|
|
var target = YAHOO.util.DDM.getBestMatch(ids);
|
|
|
|
this.clear_move_markers(target);
|
|
|
|
if (target != this && (target.is == 'resource' || target.is == 'activity')) {
|
|
// Add a top border to show where the drop will place the resource.
|
|
YAHOO.util.Dom.setStyle(target.getEl().id, 'border-top', '1px solid #BBB');
|
|
} else if (target.is == 'section' && target.resources.length > 0) {
|
|
// We need to have a border at the bottom of the last activity in
|
|
// that section.
|
|
YAHOO.util.Dom.setStyle(target.resources[target.resources.length - 1].getEl().id,
|
|
'border-bottom', '1px solid #BBB');
|
|
}
|
|
}
|
|
|
|
resource_class.prototype.onDragOut = function(e, ids) {
|
|
var target = YAHOO.util.DDM.getBestMatch(ids);
|
|
this.clear_move_markers(target);
|
|
}
|
|
|
|
resource_class.prototype.onDragDrop = function(e, ids) {
|
|
var target = YAHOO.util.DDM.getBestMatch(ids);
|
|
|
|
if (this.debug) {
|
|
YAHOO.log("Dropped on section id="+target.sectionId
|
|
+", el="+this.getEl().id
|
|
+", x="+YAHOO.util.Dom.getXY( this.getDragEl() ));
|
|
}
|
|
this.parentObj.remove_resource(this);
|
|
|
|
if (target.is == 'resource' || target.is == 'activity') {
|
|
target.parentObj.insert_resource(this, target);
|
|
} else if (target.is == 'section') {
|
|
target.insert_resource(this);
|
|
}
|
|
this.clear_move_markers(target);
|
|
return;
|
|
}
|
|
|
|
resource_class.prototype.endDrag = function() {
|
|
// Eliminates default action
|
|
}
|
|
|
|
|
|
/**
|
|
* activity_class extends resource class
|
|
*/
|
|
function activity_class(id, group, config, parentObj) {
|
|
this.init_activity(id, group, config, parentObj);
|
|
}
|
|
|
|
YAHOO.extend(activity_class, resource_class);
|
|
|
|
|
|
activity_class.prototype.init_activity = function(id, group, config, parentObj) {
|
|
if (!id) {
|
|
YAHOO.log("Init activity, NO ID FOUND!",'error');
|
|
return;
|
|
}
|
|
this.is = 'activity';
|
|
this.currentGroup = this.get_current_group(id);
|
|
this.init_resource(id, group, config, parentObj);
|
|
this.groupButton= null;
|
|
this.init_activity_button();
|
|
|
|
if (this.debug) {
|
|
YAHOO.log("--init_activity "+id);
|
|
}
|
|
}
|
|
|
|
activity_class.prototype.groupImages = ['/pix/t/groupn.gif', '/pix/t/groups.gif', '/pix/t/groupv.gif'];
|
|
|
|
activity_class.prototype.init_activity_button = function() {
|
|
var button = main.mk_button('a',this.groupImages[this.currentGroup]);
|
|
YAHOO.util.Event.addListener(button,'click',this.toggle_group,this,true);
|
|
this.commandContainer.appendChild(button);
|
|
this.groupButton = button;
|
|
}
|
|
|
|
activity_class.prototype.get_current_group = function(id) {
|
|
if (document.getElementById(id) == null) {
|
|
return;
|
|
}
|
|
var groupNodeArray = document.getElementById(id).getElementsByTagName('a');
|
|
var groupNode = groupNodeArray[groupNodeArray.length-1];
|
|
|
|
for (var x=0;x<this.groupImages.length;x++) {
|
|
if (main.portal.wwwroot+this.groupImages[x] == groupNode.getElementsByTagName('img')[0].src) {
|
|
return x;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
activity_class.prototype.toggle_group = function() {
|
|
this.currentGroup++;
|
|
if (this.currentGroup > 2) {
|
|
this.currentGroup = 0;
|
|
}
|
|
this.groupButton.getElementsByTagName('img')[0].src = main.portal.wwwroot + this.groupImages[this.currentGroup];
|
|
|
|
main.connect('post', 'class=resource&field=groupmode', null, 'value='+this.currentGroup+'&id='+this.id);
|
|
}
|