wz_dragdrop.js

java版源代码,里面包含很多源代码,大家可以看看.

						d_p.defy += d_dy;
						d_p.moveBy(d_dx, d_dy);
					}
				}
			}
		}
		else if(d_o.is_image && !dd.n4)
		{
			if(dd.n6 && d_x && !d_o.defw) d_o.resizeTo(d_o.defw = dd.getImgW(d_o.oimg), d_o.defh = dd.getImgH(d_o.oimg));
			var d_defx = d_o.defx, d_defy = d_o.defy;
			if(!(d_o.parent && d_o.parent != d_o.defparent) && (d_x || !d_o.detached || d_o.horizontal || d_o.vertical) && dd.getImg(d_o, d_o.oimg.name, 1))
				d_o.moveBy(d_o.defx-d_defx, d_o.defy-d_defy);
		}
	}
};
function WINSZ(d_x)
{
	if(d_x)
	{
		if(dd.n4)
		{
			dd.iW = innerWidth;
			dd.iH = innerHeight;
		}
		window.onresize = new Function('WINSZ();');
	}
	else if(dd.n4 && (innerWidth != dd.iW || innerHeight != dd.iH)) location.reload();
	else if(!dd.n4) setTimeout('dd.recalc()', 0xa);
}
WINSZ(1);

function DDObj(d_o, d_i)
{
	this.id = d_o;
	this.cmd = '';
	this.cpy_n = dd.getCmdVal(this, COPY);
	this.maxoffb = dd.getCmdVal(this, MAXOFFBOTTOM, 0, 1);
	this.maxoffl = dd.getCmdVal(this, MAXOFFLEFT, 0, 1);
	this.maxoffr = dd.getCmdVal(this, MAXOFFRIGHT, 0, 1);
	this.maxofft = dd.getCmdVal(this, MAXOFFTOP, 0, 1);
	var d_j = dd_cursors.length; while(d_j--)
		if(dd.getCmd(this, dd_cursors[d_j], 1)) this.cursor = dd_cursors[d_j].substring(2);
	this.clone = dd.getCmd(this, CLONE, 1);
	this.detach = dd.getCmd(this, DETACH_CHILDREN);
	this.scalable = dd.getCmd(this, SCALABLE, 1);
	this.horizontal = dd.getCmd(this, HORIZONTAL);
	this.noalt = dd.getCmd(this, NO_ALT, 1);
	this.nodrag = dd.getCmd(this, NO_DRAG);
	this.scroll = dd.getCmd(this, SCROLL, 1);
	this.resizable = dd.getCmd(this, RESIZABLE, 1);
	this.re_z = dd.getCmd(this, RESET_Z, 1);
	this.diaphan = dd.getCmd(this, TRANSPARENT, 1);
	this.vertical = dd.getCmd(this, VERTICAL);
	this.maxw = dd.getCmdVal(this, MAXWIDTH, 1, 1);
	this.minw = Math.abs(dd.getCmdVal(this, MINWIDTH, 1, 1));
	this.maxh = dd.getCmdVal(this, MAXHEIGHT, 1, 1);
	this.minh = Math.abs(dd.getCmdVal(this, MINHEIGHT, 1, 1));
	this.pickFunc = this.dragFunc = this.resizeFunc = this.dropFunc = null;

	this.name = this.id + (d_i || '');
	this.oimg = dd.getImg(this, this.id, 1);
	this.is_image = !!this.oimg;
	this.copies = new Array();
	this.children = new Array();
	this.parent = this.original = null;
	if(this.oimg)
	{
		this.id = this.name + 'div';
		this.w = dd.getImgW(this.oimg);
		this.h = dd.getImgH(this.oimg);
		this.dw = this.dh = 0;
		this.defz = dd.Int(dd.getCssProp(this.oimg, 'z-index','zIndex','zIndex')) || 1;
		this.defsrc = this.src = this.oimg.src;
		this.htm = '<img name="' + this.id + 'NImG"'+
			' src="' + this.oimg.src + '" '+
			'width="' + this.w + '" height="' + this.h + '">';
		this.t_htm = '<div id="' + this.id +
			'" style="position:absolute;'+
			'left:' + (this.cssx = this.x = this.defx) + 'px;'+
			'top:' + (this.cssy = this.y = this.defy) + 'px;'+
			'width:' + this.w + 'px;'+
			'height:' + this.h + 'px;">'+
			this.htm + '</div>';
	}
	else
	{
		if(!!(this.div = dd.getDiv(this.id)) && typeof this.div.style != dd_u) this.css = this.div.style;
		dd.getWH(this);
		if(this.div)
		{
			this.div.ddObj = this;
			this.div.pos_rel = ("" + (this.div.parentNode? this.div.parentNode.tagName : this.div.parentElement? this.div.parentElement.tagName : '').toLowerCase().indexOf('body') < 0);
		}
		dd.getPageXY(this.div);
		this.defx = this.x = dd.x;
		this.defy = this.y = dd.y;
		dd.getCssXY(this);
		this.defz = dd.Int(dd.getCssProp(this.div, 'z-index','zIndex','zIndex'));
	}
	this.defw = this.w || 0;
	this.defh = this.h || 0;
}
DDObj.prototype.setPickFunc = function(d_x)
{
	this.pickFunc = d_x;
};
DDObj.prototype.setDragFunc = function(d_x)
{
	this.dragFunc = d_x;
};
DDObj.prototype.setResizeFunc = function(d_x)
{
	this.resizeFunc = d_x;
};
DDObj.prototype.setDropFunc = function(d_x)
{
	this.dropFunc = d_x;
};
DDObj.prototype.moveBy = function(d_x, d_y, d_kds, d_o)
{
	if(!this.div) return;
	this.x += (d_x = dd.Int(d_x));
	this.y += (d_y = dd.Int(d_y));
	if(!d_kds || this.is_image || this.parent != this.defparent)
	{
		(d_o = this.css || this.div).left = (this.cssx += d_x) + dd.px;
		d_o.top = (this.cssy += d_y) + dd.px;
	}
	var d_i = this.children.length; while(d_i--)
	{
		if(!(d_o = this.children[d_i]).detached) d_o.moveBy(d_x, d_y, 1);
		d_o.defx += d_x;
		d_o.defy += d_y;
	}
};

DDObj.prototype.moveTo = function(d_x, d_y)
{
	this.moveBy(dd.Int(d_x)-this.x, dd.Int(d_y)-this.y);
};
DDObj.prototype.hide = function(d_m, d_o, d_p)
{
	if(this.div && this.visible)
	{
		d_p = this.css || this.div;
		if(d_m && !dd.n4)
		{
			this.display = dd.getCssProp(this.div, "display", "display", "display");
			if(this.oimg)
			{
				this.oimg.display = dd.getCssProp(this.oimg, "display", "display", "display");
				this.oimg.style.display = "none";
			}
			d_p.display = "none";
			dd.recalc();
		}
		else d_p.visibility = "hidden";
	}
	this.visible = false;
	var d_i = this.children.length; while(d_i--)
		if(!(d_o = this.children[d_i]).detached) d_o.hide(d_m);
};
DDObj.prototype.show = function(d_o, d_p)
{
	if(this.div)
	{
		d_p = this.css || this.div;
		if(d_p.display && d_p.display == "none")
		{
			d_p.display = this.display || "block";
			if(this.oimg) this.oimg.style.display = this.oimg.display || "inline";
			dd.recalc();
		}
		else d_p.visibility = "visible";
	}
	this.visible = true;
	var d_i = this.children.length; while(d_i--)
		if(!(d_o = this.children[d_i]).detached) d_o.show();
};
DDObj.prototype.resizeTo = function(d_w, d_h, d_o)
{
	if(!this.div) return;
	d_w = (this.w = dd.Int(d_w))-this.dw;
	d_h = (this.h = dd.Int(d_h))-this.dh;
	if(dd.n4)
	{
		this.div.resizeTo(d_w, d_h);
		if(this.is_image)
		{
			this.write('<img src="' + this.src + '" width="' + d_w + '" height="' + d_h + '">');
			(this.nimg = this.div.document.images[0]).src = this.src;
		}
	}
	else if(typeof this.css.pixelWidth != dd_u)
	{
		this.css.pixelWidth = d_w;
		this.css.pixelHeight = d_h;
		if(this.is_image)
		{
			(d_o = this.nimg.style).pixelWidth = d_w;
			d_o.pixelHeight = d_h;
		}
	}
	else
	{
		this.css.width = d_w + dd.px;
		this.css.height = d_h + dd.px;
		if(this.is_image)
		{
			(d_o = this.nimg).width = d_w;
			d_o.height = d_h;
			if(!d_o.complete) d_o.src = this.src;
		}
	}
};
DDObj.prototype.resizeBy = function(d_dw, d_dh)
{
	this.resizeTo(this.w+dd.Int(d_dw), this.h+dd.Int(d_dh));
};
DDObj.prototype.swapImage = function(d_x, d_cp)
{
	if(!this.nimg) return;
	this.nimg.src = d_x;
	this.src = this.nimg.src;
	if(d_cp)
	{
		var d_i = this.copies.length; while(d_i--)
			this.copies[d_i].src = this.copies[d_i].nimg.src = this.nimg.src;
	}
};
DDObj.prototype.setBgColor = function(d_x)
{
	if(dd.n4 && this.div) this.div.bgColor = d_x;
	else if(this.css) this.css.background = d_x;
	this.bgColor = d_x;
};
DDObj.prototype.write = function(d_x, d_o)
{
	this.text = d_x;
	if(!this.div) return;
	if(dd.n4)
	{
		(d_o = this.div.document).open();
		d_o.write(d_x);
		d_o.close();
		dd.getWH(this);
	}
	else
	{
		this.css.height = 'auto';
		this.div.innerHTML = d_x;
		if(!dd.ie4) dd.recalc();
		if(dd.ie4 || dd.n6) setTimeout('dd.recalc();', 0); // n6.0: recalc twice
	}
};
DDObj.prototype.copy = function(d_n, d_p, d_b)
{
	if(!this.oimg) return;
	d_b = (dd.ie && document.all.tags('body'))? document.all.tags('body')[0] : document.getElementsByTagName? (document.getElementsByTagName('body')[0] || dd.db) : dd.db;
	d_n = d_n || 1;
	while(d_n--)
	{
		var d_l = this.copies.length,
		d_o = new DDObj(this.name+this.cmd, d_l+1);
		if(dd.n4)
		{
			d_o.id = (d_p = new Layer(d_o.w)).name;
			d_p.clip.height = d_o.h;
			d_p.visibility = 'show';
			(d_p = d_p.document).open();
			d_p.write(d_o.htm);
			d_p.close();
		}
		else if(d_b && d_b.insertAdjacentHTML) d_b.insertAdjacentHTML("AfterBegin", d_o.t_htm);
		else if(document.createElement && d_b && d_b.appendChild)
		{
			d_b.appendChild(d_p = document.createElement('div'));
			d_p.innerHTML = d_o.htm;
			d_p.id = d_o.id;
			d_p.style.position = 'absolute';
			d_p.style.width = d_o.w + 'px';
			d_p.style.height = d_o.h + 'px';
		}
		else if(d_b && d_b.innerHTML) d_b.innerHTML += d_o.t_htm;
		d_o.defz = this.defz+1+d_l;
		dd.addProps(d_o);
		d_o.original = this;
		dd.addElt(d_o, this);
		if(this.parent)
		{
			this.parent.addChild(d_o, this.detached);
			d_o.defparent = this.defparent;
		}
		d_o.moveTo(d_o.defx = this.defx, d_o.defy = this.defy);
		if(dd.n4) d_o.defsrc = d_o.src = this.defsrc;
		d_o.swapImage(this.src);
	}
};
DDObj.prototype.addChild = function(d_kd, detach, defp)
{
	if(typeof d_kd != "object") d_kd = dd.elements[d_kd];
	if(d_kd.parent && d_kd.parent == this || d_kd == this || !d_kd.is_image && d_kd.defparent && !defp) return;

	this.children[this.children.length] = this.children[d_kd.name] = d_kd;
	d_kd.detached = detach || 0;
	if(defp) d_kd.defparent = this;
	else if(this == d_kd.defparent && d_kd.is_image) dd.getImg(this, d_kd.oimg.name, 1);
	if(!d_kd.defparent || this != d_kd.defparent)
	{
		d_kd.defx = d_kd.x;
		d_kd.defy = d_kd.y;
	}
	if(!detach)
	{
		d_kd.defz = d_kd.defz+this.defz-(d_kd.parent? d_kd.parent.defz : 0)+(!d_kd.is_image*1);
		d_kd.setZ(d_kd.z+this.z-(d_kd.parent? d_kd.parent.z : 0)+(!d_kd.is_image*1), 1);
	}
	if(d_kd.parent) d_kd.parent._removeChild(d_kd, 1);
	d_kd.parent = this;
};
DDObj.prototype._removeChild = function(d_kd, d_newp)
{
	if(typeof d_kd != "object") d_kd = this.children[d_kd];
	var d_oc = this.children, d_nc = new Array();
	for(var d_i = 0; d_i < d_oc.length; d_i++)
		if(d_oc[d_i] != d_kd) d_nc[d_nc.length] = d_oc[d_i];
	this.children = d_nc;
	d_kd.parent = null;
	if(!d_newp)
	{
		d_kd.detached = d_kd.defp = 0;
		if(d_kd.is_image) dd.getImg(d_kd, d_kd.oimg.name, 1);
	}
};
DDObj.prototype.attachChild = function(d_kd)
{
	(d_kd = (typeof d_kd != "object")? this.children[d_kd]: d_kd).detached = 0;
	d_kd.setZ(d_kd.defz + this.z-this.defz, 1);
};
DDObj.prototype.detachChild = function(d_kd)
{
	(d_kd = (typeof d_kd != "object")? this.children[d_kd]: d_kd).detached = 1;
};
DDObj.prototype.setZ = function(d_x, d_kds, d_o)
{
	if(d_kds)
	{
		var d_dz = d_x-this.z,
		d_i = this.children.length; while(d_i--)
			if(!(d_o = this.children[d_i]).detached) d_o.setZ(d_o.z+d_dz, 1);
	}
	dd.z = Math.max(dd.z, this.z = this.div? ((this.css || this.div).zIndex = d_x) : 0);
};
DDObj.prototype.maximizeZ = function()
{
	this.setZ(dd.z+1, 1);
};
DDObj.prototype._resetZ = function(d_o)
{
	if(this.re_z || dd.re_z)
	{
		this.setZ(this.defz);
		var d_i = this.children.length; while(d_i--)
			if(!(d_o = this.children[d_i]).detached) d_o.setZ(d_o.defz);
	}
};
DDObj.prototype.setOpacity = function(d_x)
{
	this.opacity = d_x;
	this._setOpaRel(1.0, 1);
};
DDObj.prototype._setOpaRel = function(d_x, d_kd, d_y, d_o)
{
	if(this.diaphan || d_kd)
	{
		d_y = this.opacity*d_x;
		if(dd.n6) this.css.MozOpacity = d_y;
		else if(dd.ie && !dd.iemac)
		{
			if(this.css)
				this.css.filter = "Alpha(opacity="+parseInt(100*d_y)+")";
		}
		else if(this.css) this.css.opacity = d_y;
		var d_i = this.children.length; while(d_i--)
			if(!(d_o = this.children[d_i]).detached) d_o._setOpaRel(d_x, 1);
	}
};
DDObj.prototype.setCursor = function(d_x)
{
	this._setCrs(this.cursor = (d_x.indexOf('c:')+1)? d_x.substring(2) : d_x);
};
DDObj.prototype._setCrs = function(d_x)
{
	if(this.css) this.css.cursor = ((!dd.ie || dd.iemac) && d_x == 'hand')? 'pointer' : d_x;
};
DDObj.prototype.setDraggable = function(d_x)
{
	this.nodrag = !d_x*1;
	this._setCrs(d_x? this.cursor : 'auto');
};
DDObj.prototype.setResizable = function(d_x)
{
	this.resizable = d_x*1;
	if(d_x) this.scalable = 0;
};
DDObj.prototype.setScalable = function(d_x)
{
	this.scalable = d_x*1;
	if(d_x) this.resizable = 0;
};
DDObj.prototype.getEltBelow = function(d_ret, d_x, d_y)
{
	var d_o, d_cmp = -1, d_i = dd.elements.length; while(d_i--)
	{
		d_o = dd.elements[d_i];
		d_x = d_o.x-this.w/2;
		d_y = d_o.y-this.h/2;
		if(d_o.visible && d_o.z < this.z && this.x >= d_x && this.x <= d_x+d_o.w && this.y >= d_y && this.y <= d_y+d_o.h)
		{
			if(d_o.z > d_cmp)
			{
				d_cmp = d_o.z;
				d_ret = d_o;
			}
		}
	}
	return d_ret;
};
DDObj.prototype.del = function(d_os, d_o)
{
	var d_i;
	if(this.parent && this.parent._removeChild) this.parent._removeChild(this);
	if(this.original)
	{
		this.hide();
		if(this.original.copies)
		{
			d_os = new Array();
			for(d_i = 0; d_i < this.original.copies.length; d_i++)
				if((d_o = this.original.copies[d_i]) != this) d_os[d_o.name] = d_os[d_os.length] = d_o;
			this.original.copies = d_os;
		}
	}
	else if(this.is_image)
	{
		this.hide();
		if(this.oimg)
		{
		  if(dd.n4) this.oimg.src = this.defsrc;
		  else this.oimg.style.visibility = 'visible';
		}
	}
	else if(this.moveTo)
	{
		if(this.css) this.css.cursor = 'default';
		this.moveTo(this.defx, this.defy);
		this.resizeTo(this.defw, this.defh);
	}
	d_os = new Array();
	for(d_i = 0; d_i < dd.elements.length; d_i++)
	{
		if((d_o = dd.elements[d_i]) != this) d_os[d_o.name] = d_os[d_o.index = d_os.length] = d_o;
		else d_o._free();
	}
	dd.elements = d_os;
	if(!dd.n4) dd.recalc();
};
DDObj.prototype._free = function()
{