Add formvista's 'draglist'.

2 files changed, 444 insertions, 0 deletions

diff --git a/usr/local/www/dom-drag.js b/usr/local/www/dom-drag.js
new file mode 100755
index 0000000..7c31f01
--- /dev/null
+++ b/usr/local/www/dom-drag.js
@@ -0,0 +1,149 @@
+/**************************************************
+ * dom-drag.js
+ * 09.25.2001
+ * www.youngpup.net
+ **************************************************
+ * 10.28.2001 - fixed minor bug where events
+ * sometimes fired off the handle, not the root.
+ **************************************************
+ * 05.30.2005 - added a workaround for firefox
+ * activating links when finished dragging.
+ * mmosier@astrolabe.com
+ **************************************************/
+
+var Drag = {
+
+	obj : null,
+
+	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
+	{
+		o.onmousedown	= Drag.start;
+
+		o.hmode			= bSwapHorzRef ? false : true ;
+		o.vmode			= bSwapVertRef ? false : true ;
+
+		o.root = oRoot && oRoot != null ? oRoot : o ;
+
+		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
+		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
+		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
+		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";
+
+		o.minX	= typeof minX != 'undefined' ? minX : null;
+		o.minY	= typeof minY != 'undefined' ? minY : null;
+		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
+		o.maxY	= typeof maxY != 'undefined' ? maxY : null;
+
+		o.xMapper = fXMapper ? fXMapper : null;
+		o.yMapper = fYMapper ? fYMapper : null;
+
+		o.root.onDragStart	= new Function();
+		o.root.onDragEnd	= new Function();
+		o.root.onDrag		= new Function();
+	},
+
+	start : function(e)
+	{
+		var o = Drag.obj = this;
+		e = Drag.fixE(e);
+		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
+		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
+		o.root.onDragStart(x, y);
+
+		o.startX		= x;
+		o.startY		= y;
+		o.lastMouseX	= e.clientX;
+		o.lastMouseY	= e.clientY;
+
+		if (o.hmode) {
+			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
+			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
+		} else {
+			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
+			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
+		}
+
+		if (o.vmode) {
+			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
+			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
+		} else {
+			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
+			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
+		}
+
+		document.onmousemove	= Drag.drag;
+		document.onmouseup		= Drag.end;
+
+		if (o.linkDisabled) {
+			var hrefs = o.root.getElementsByTagName("a");
+			for (var i = 0; i < hrefs.length; i++) {
+				hrefs[i].onclick = hrefs[i].prevOnclick;
+				hrefs[i].prevOnclick = null;
+			}
+			o.linkDisabled = false;
+		}
+
+		return false;
+	},
+
+	drag : function(e)
+	{
+		e = Drag.fixE(e);
+		var o = Drag.obj;
+
+		var ey	= e.clientY;
+		var ex	= e.clientX;
+		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
+		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
+		var nx, ny;
+
+		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
+		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
+		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
+		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);
+
+		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
+		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));
+
+		if (o.xMapper)		nx = o.xMapper(y)
+		else if (o.yMapper)	ny = o.yMapper(x)
+
+		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
+		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
+		Drag.obj.lastMouseX	= ex;
+		Drag.obj.lastMouseY	= ey;
+
+		var threshold = 4;
+		if (!o.linkDisabled) {
+			if (Math.abs(nx - o.startX) > threshold || Math.abs(ny - o.startY) > threshold) {
+				var hrefs = o.root.getElementsByTagName("a");
+				for (var i = 0; i < hrefs.length; i++) {
+					hrefs[i].prevOnclick = hrefs[i].onclick;
+					hrefs[i].onclick = function() { return false; };
+				}
+				o.linkDisabled = true;
+			}
+		}
+
+		Drag.obj.root.onDrag(nx, ny, Drag.obj.root);
+		return false;
+	},
+
+	end : function()
+	{
+		document.onmousemove = null;
+		document.onmouseup   = null;
+		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
+									parseInt(Drag.obj.root.style[Drag.obj.vmode
+                                    ? "top" : "bottom"]), Drag.obj.root);
+		Drag.obj = null;
+	},
+
+	fixE : function(e)
+	{
+		if (typeof e == 'undefined') e = window.event;
+		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
+		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
+		return e;
+	}
+};
diff --git a/usr/local/www/draglist.js b/usr/local/www/draglist.js
new file mode 100755
index 0000000..a8651ec
--- /dev/null
+++ b/usr/local/www/draglist.js
@@ -0,0 +1,295 @@
+// ----------------------------------------------------------------------------
+// (c) Copyright, DTLink, LLC 1997-2005
+//     http://www.dtlink.com
+//
+// DragList - Drag and Drop Ordered Lists
+//
+// Javascript Support file for formVista <draglist> fvml tag.
+//
+// For more information please see:
+//
+//    http://www.formvista.com/otherprojects/draglist.html
+//
+// For questions or comments please contact us at:
+//
+//     http://www.formvista.com/contact.html
+//
+// LICENSE: This file is governed by the new BSD license. For more information
+// please see the LICENSE.txt file accompanying this package. 
+//
+// REVISION HISTORY:
+//
+// 2004-11-12 YmL:
+//	.	initial revision.
+//
+// 2005-05-28 YmL:
+//	.	pulled out of formVista, relicensed and packaged as a standalone implementation.
+//
+// 2005-06-02 mtmosier:
+//	.	added horizontal dragging support.
+//
+// ------------------------
+
+/**
+* constructor for dragList class
+*/
+
+function fv_dragList( name )
+	{
+
+	// name of this dragList. Must match the id of the root DIV tag.
+
+	this.dragListRootId = name;
+
+	// array of item offsets
+
+	this.offsetsX = new Array();
+	this.offsetsY = new Array();
+
+	}
+
+// ----------------------------------------------
+
+/**
+* setup the draglist prior to use
+*
+* @param string orientation defaults to vert. if set to "horz" renders horizontally.
+* @param string itemTagName. if null defaults to "div". Can be "span".
+*/
+
+fv_dragList.prototype.setup = function( orientation, itemTagName )
+	{
+
+	var horizontal;
+
+	if ( orientation == "horz" )
+		horizontal = true;
+	else
+		horizontal = false;
+
+	this.listRoot = document.getElementById( this.dragListRootId );
+	this.listItems = this.getListItems( itemTagName );
+
+	for (var i = 0; i < this.listItems.length; i++) 
+		{
+
+		if ( this.listItems[i] == undefined )
+			continue;
+
+		if ( horizontal )
+			{
+			Drag.init(this.listItems[i], null, null, null, 0, 0);
+			}
+		else
+			{
+			Drag.init(this.listItems[i], null, 0, 0, null, null);
+			}
+
+		// ---------------------------------------------------
+		// on drag method
+
+		this.listItems[i].onDrag = function( x, y, thisElem ) 
+			{
+
+			x = thisElem.offsetLeft;
+			y = thisElem.offsetTop;
+
+			// this is a callback from the dom-drag code. From within this
+			// function "this" does not refer to the fv_draglist function.
+
+			draglist = getDragList( thisElem );
+
+			draglist.recalcOffsets( itemTagName );
+
+			var pos = draglist.getCurrentOffset( thisElem, itemTagName );
+
+			//var listItems = this.getListItems( itemTagName );
+
+			// if bottom edge is below top of lower item.
+
+			var testMoveUp;
+			var testMoveDown;
+			if ( horizontal )
+				{
+				testMoveUp = (x + draglist.getDivWidth(thisElem) > draglist.offsetsX[pos + 1] + draglist.getDivWidth( draglist.listItems[pos + 1] ));
+				testMoveDown = x < draglist.offsetsX[pos - 1];
+				}
+			else
+				{
+				testMoveUp = (y + draglist.getDivHeight(thisElem) > draglist.offsetsY[pos + 1] + draglist.getDivHeight( draglist.listItems[pos + 1] ));
+				testMoveDown = y < draglist.offsetsY[pos - 1];
+				}
+
+			if (( pos != draglist.listItems.length - 1) && testMoveUp )
+				{ 
+				draglist.listRoot.removeChild(thisElem);
+
+				if ( pos + 1 == draglist.listItems.length )
+					{
+					draglist.listRoot.appendChild( thisElem );
+					}
+				else
+					{
+					draglist.listRoot.insertBefore(thisElem, draglist.listItems[pos+1]);
+					}
+
+				thisElem.style["top"] = "0px";
+				thisElem.style["left"] = "0px";
+				}
+			else if ( pos != 0 && testMoveDown ) 
+				{ 
+				draglist.listRoot.removeChild(thisElem);
+				draglist.listRoot.insertBefore(thisElem, draglist.listItems[pos-1]);
+				thisElem.style["top"] = "0px";
+				thisElem.style["left"] = "0px";
+				}
+
+			};
+
+		this.listItems[i].onDragEnd = function(x,y,thisElem) 
+			{
+			thisElem.style["top"] = "0px";
+			thisElem.style["left"] = "0px";
+			}
+
+		}	// end of for loop.
+
+	this.recalcOffsets( itemTagName );
+
+	}	// end of setup.
+
+// ----------------------------------------------
+
+
+/**
+* update the order value fields and submit the form.
+*/
+
+fv_dragList.prototype.do_submit = function( formName, dragListRootId )
+	{
+
+	var listOrderItems = this.listRoot.getElementsByTagName("input");
+
+	for (var i = 0; i < listOrderItems.length; i++) 
+		{
+		listOrderItems[i].value = i;
+		}
+
+	expr = "document." + formName + ".submit()";
+
+	eval( expr );
+	}
+
+// ----------------------------------------------
+// "Private" methods.
+// ----------------------------------------------
+
+fv_dragList.prototype.recalcOffsets = function( itemTagName ) 
+	{
+	var listItems = this.getListItems( itemTagName );
+
+	for (var i = 0; i < listItems.length; i++) 
+		{
+		this.offsetsX[i] = listItems[i].offsetLeft;
+		this.offsetsY[i] = listItems[i].offsetTop;
+		}
+	}
+
+fv_dragList.prototype.getCurrentOffset = function(elem, itemTagName) 
+	{ 
+	var listItems = this.getListItems( itemTagName );
+
+	for (var i = 0; i < listItems.length; i++) 
+		{
+		if (listItems[i] == elem) 
+			{ 
+			return i;
+			}
+		}
+	}
+
+fv_dragList.prototype.getDivWidth = function(elem) 								  
+	{
+
+	if (( elem == undefined) || ( elem.offsetWidth == undefined ))
+		return( 0 );
+
+	value = elem.offsetWidth;
+	if (isNaN(value))
+		{
+		value = 0;
+		}
+
+	return( value );
+	}
+
+fv_dragList.prototype.getDivHeight = function(elem) 
+	{
+
+	if (( elem == undefined) || ( elem.offsetHeight == undefined ))
+		return( 0 );
+
+	value = elem.offsetHeight;
+	if (isNaN(value))
+		{
+		value = 25;
+		}
+
+	return( value );
+	}
+
+/**
+* return list of draggable items
+*/
+
+fv_dragList.prototype.getListItems = function( itemTagName )
+	{
+	if ( itemTagName == undefined )
+		{
+		itemTagName = "div";
+		}
+
+	var listItems = this.listRoot.getElementsByTagName( itemTagName );
+
+	return( listItems );
+	}
+
+// end of draglist class definition.
+
+// -------------------------------------
+
+/**
+* add a new dragList to the list of draglists on this page
+*
+* This implementatoin supports multiple managed draglists on
+* a single page. The index is contained in a global dragListIndex
+* array that must be declared in the page.
+*/
+
+function addDragList( draglist )
+	{
+	dragListIndex[ draglist.dragListRootId ] = draglist;
+	}
+
+// -------------------------------------------------------
+
+/**
+* given a draggable div element, return the draglist it belongs to
+*
+* @see fv_draglist.prototype.setup
+* @todo this should probably be a method inside the draglist class.
+*/
+
+function getDragList( elem )
+	{
+
+	// given a list item return the drag list it belongs to.
+
+	var draglistContainer = elem.parentNode;
+
+	var draglist = dragListIndex[ draglistContainer.id ];
+
+	return( draglist );
+	}
+
+// END