Cleaned up via JSLint

This commit is contained in:
JC Brand 2014-01-19 13:04:58 +02:00
parent 296c6e605f
commit c46b5cc7cc

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@ -1,5 +1,4 @@
/* /*
DragResize v1.0 DragResize v1.0
(c) 2005-2006 Angus Turnbull, TwinHelix Designs http://www.twinhelix.com (c) 2005-2006 Angus Turnbull, TwinHelix Designs http://www.twinhelix.com
@ -7,346 +6,315 @@ Licensed under the CC-GNU LGPL, version 2.1 or later:
http://creativecommons.org/licenses/LGPL/2.1/ http://creativecommons.org/licenses/LGPL/2.1/
This is distributed WITHOUT ANY WARRANTY; without even the implied This is distributed WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/ */
// Common API code. // Common API code.
if (typeof addEvent != 'function') {
var removeEvent = function(o, t, f, l) {
var d = 'removeEventListener';
if (o[d] && !l) {
return o[d](t, f, false);
}
if (o._evts && o._evts[t] && f._i) {
delete o._evts[t][f._i];
}
};
if (typeof addEvent != 'function') var addEvent = function(o, t, f, l) {
{ var d = 'addEventListener', n = 'on' + t, rO = o, rT = t, rF = f, rL = l;
var addEvent = function(o, t, f, l) if (o[d] && !l) {
{ return o[d](t, f, false);
var d = 'addEventListener', n = 'on' + t, rO = o, rT = t, rF = f, rL = l; }
if (o[d] && !l) return o[d](t, f, false); if (!o._evts) {
if (!o._evts) o._evts = {}; o._evts = {};
if (!o._evts[t]) }
{ if (!o._evts[t]) {
o._evts[t] = o[n] ? { b: o[n] } : {}; o._evts[t] = o[n] ? { b: o[n] } : {};
o[n] = new Function('e', o[n] = new Function('e',
'var r = true, o = this, a = o._evts["' + t + '"], i; for (i in a) {' + 'var r = true, o = this, a = o._evts["' + t + '"], i; for (i in a) {' +
'o._f = a[i]; r = o._f(e||window.event) != false && r; o._f = null;' + 'o._f = a[i]; r = o._f(e||window.event) != false && r; o._f = null;' +
'} return r'); '} return r'
if (t != 'unload') addEvent(window, 'unload', function() { );
removeEvent(rO, rT, rF, rL); if (t != 'unload') {
}); addEvent(window, 'unload', function() {
} removeEvent(rO, rT, rF, rL);
if (!f._i) f._i = addEvent._i++; });
o._evts[t][f._i] = f; }
}; }
addEvent._i = 1; if (!f._i) {
var removeEvent = function(o, t, f, l) f._i = addEvent._i++;
{ }
var d = 'removeEventListener'; o._evts[t][f._i] = f;
if (o[d] && !l) return o[d](t, f, false); };
if (o._evts && o._evts[t] && f._i) delete o._evts[t][f._i]; addEvent._i = 1;
};
} }
function cancelEvent(e, c) {
function cancelEvent(e, c) e.returnValue = false;
{ if (e.preventDefault) {
e.returnValue = false; e.preventDefault();
if (e.preventDefault) e.preventDefault(); }
if (c) if (c) {
{ e.cancelBubble = true;
e.cancelBubble = true; if (e.stopPropagation) {
if (e.stopPropagation) e.stopPropagation(); e.stopPropagation();
} }
}; }
}
// *** DRAG/RESIZE CODE *** // *** DRAG/RESIZE CODE ***
function DragResize(myName, config) {
var props = {
myName: myName, // Name of the object.
enabled: true, // Global toggle of drag/resize.
handles: ['tl', 'tm', 'tr',
'ml', 'mr', 'bl', 'bm', 'br'], // Array of drag handles: top/mid/bot/right.
isElement: null, // Function ref to test for an element.
isHandle: null, // Function ref to test for move handle.
element: null, // The currently selected element.
handle: null, // Active handle reference of the element.
minWidth: 10, minHeight: 10, // Minimum pixel size of elements.
minLeft: 0, maxLeft: 9999, // Bounding box area, in pixels.
minTop: 0, maxTop: 9999,
zIndex: 1, // The highest Z-Index yet allocated.
mouseX: 0, mouseY: 0, // Current mouse position, recorded live.
lastMouseX: 0, lastMouseY: 0, // Last processed mouse positions.
mOffX: 0, mOffY: 0, // A known offset between position & mouse.
elmX: 0, elmY: 0, // Element position.
elmW: 0, elmH: 0, // Element size.
allowBlur: true, // Whether to allow automatic blur onclick.
ondragfocus: null, // Event handler functions.
ondragstart: null,
ondragmove: null,
ondragend: null,
ondragblur: null
};
function DragResize(myName, config) for (var p in props) {
{ this[p] = (typeof config[p] == 'undefined') ? props[p] : config[p];
var props = { }
myName: myName, // Name of the object.
enabled: true, // Global toggle of drag/resize.
handles: ['tl', 'tm', 'tr',
'ml', 'mr', 'bl', 'bm', 'br'], // Array of drag handles: top/mid/bot/right.
isElement: null, // Function ref to test for an element.
isHandle: null, // Function ref to test for move handle.
element: null, // The currently selected element.
handle: null, // Active handle reference of the element.
minWidth: 10, minHeight: 10, // Minimum pixel size of elements.
minLeft: 0, maxLeft: 9999, // Bounding box area, in pixels.
minTop: 0, maxTop: 9999,
zIndex: 1, // The highest Z-Index yet allocated.
mouseX: 0, mouseY: 0, // Current mouse position, recorded live.
lastMouseX: 0, lastMouseY: 0, // Last processed mouse positions.
mOffX: 0, mOffY: 0, // A known offset between position & mouse.
elmX: 0, elmY: 0, // Element position.
elmW: 0, elmH: 0, // Element size.
allowBlur: true, // Whether to allow automatic blur onclick.
ondragfocus: null, // Event handler functions.
ondragstart: null,
ondragmove: null,
ondragend: null,
ondragblur: null
};
for (var p in props)
this[p] = (typeof config[p] == 'undefined') ? props[p] : config[p];
}; };
DragResize.prototype.apply = function(node) DragResize.prototype.apply = function(node) {
{ // Adds object event handlers to the specified DOM node.
// Adds object event handlers to the specified DOM node. var obj = this;
addEvent(node, 'mousedown', function(e) { obj.mouseDown(e) } );
var obj = this; addEvent(node, 'mousemove', function(e) { obj.mouseMove(e) } );
addEvent(node, 'mousedown', function(e) { obj.mouseDown(e) } ); addEvent(node, 'mouseup', function(e) { obj.mouseUp(e) } );
addEvent(node, 'mousemove', function(e) { obj.mouseMove(e) } );
addEvent(node, 'mouseup', function(e) { obj.mouseUp(e) } );
}; };
DragResize.prototype.select = function(newElement) {
with (this) {
// Selects an element for dragging.
if (!document.getElementById || !enabled) return;
DragResize.prototype.select = function(newElement) { with (this) // Activate and record our new dragging element.
{ if (newElement && (newElement != element) && enabled) {
// Selects an element for dragging. element = newElement;
// Elevate it and give it resize handles.
element.style.zIndex = ++zIndex;
if (this.resizeHandleSet) this.resizeHandleSet(element, true);
// Record element attributes for mouseMove().
elmX = parseInt(element.style.left);
elmY = parseInt(element.style.top);
elmW = element.offsetWidth;
elmH = element.offsetHeight;
if (ondragfocus) this.ondragfocus();
}
}
};
if (!document.getElementById || !enabled) return; DragResize.prototype.deselect = function(delHandles) {
with (this) {
// Immediately stops dragging an element. If 'delHandles' is true, this
// remove the handles from the element and clears the element flag,
// completely resetting the .
if (!document.getElementById || !enabled) return;
// Activate and record our new dragging element. if (delHandles) {
if (newElement && (newElement != element) && enabled) if (ondragblur) this.ondragblur();
{ if (this.resizeHandleSet) this.resizeHandleSet(element, false);
element = newElement; element = null;
// Elevate it and give it resize handles. }
element.style.zIndex = ++zIndex; handle = null;
if (this.resizeHandleSet) this.resizeHandleSet(element, true); mOffX = 0;
// Record element attributes for mouseMove(). mOffY = 0;
elmX = parseInt(element.style.left); }
elmY = parseInt(element.style.top); };
elmW = element.offsetWidth;
elmH = element.offsetHeight; DragResize.prototype.mouseDown = function(e) {
if (ondragfocus) this.ondragfocus(); with (this) {
} // Suitable elements are selected for drag/resize on mousedown.
// We also initialise the resize boxes, and drag parameters like mouse position etc.
if (!document.getElementById || !enabled) return true;
var elm = e.target || e.srcElement,
newElement = null,
newHandle = null,
hRE = new RegExp(myName + '-([trmbl]{2})', '');
while (elm) {
// Loop up the DOM looking for matching elements. Remember one if found.
if (elm.className) {
if (!newHandle && (hRE.test(elm.className) || isHandle(elm))) newHandle = elm;
if (isElement(elm)) { newElement = elm; break }
}
elm = elm.parentNode;
}
// If this isn't on the last dragged element, call deselect(),
// which will hide its handles and clear element.
if (element && (element != newElement) && allowBlur) deselect(true);
// If we have a new matching element, call select().
if (newElement && (!element || (newElement == element))) {
// Stop mouse selections if we're dragging a handle.
if (newHandle) cancelEvent(e);
select(newElement, newHandle);
handle = newHandle;
if (handle && ondragstart) this.ondragstart(hRE.test(handle.className));
}
}
};
DragResize.prototype.mouseMove = function(e) { with (this) {
// This continually offsets the dragged element by the difference between the
// last recorded mouse position (mouseX/Y) and the current mouse position.
if (!document.getElementById || !enabled) return true;
// We always record the current mouse position.
mouseX = e.pageX || e.clientX + document.documentElement.scrollLeft;
mouseY = e.pageY || e.clientY + document.documentElement.scrollTop;
// Record the relative mouse movement, in case we're dragging.
// Add any previously stored & ignored offset to the calculations.
var diffX = mouseX - lastMouseX + mOffX;
var diffY = mouseY - lastMouseY + mOffY;
mOffX = mOffY = 0;
// Update last processed mouse positions.
lastMouseX = mouseX;
lastMouseY = mouseY;
// That's all we do if we're not dragging anything.
if (!handle) return true;
// If included in the script, run the resize handle drag routine.
// Let it create an object representing the drag offsets.
var isResize = false;
if (this.resizeHandleDrag && this.resizeHandleDrag(diffX, diffY)) {
isResize = true;
} else {
// If the resize drag handler isn't set or returns fase (to indicate the drag was
// not on a resize handle), we must be dragging the whole element, so move that.
// Bounds check left-right...
var dX = diffX, dY = diffY;
if (elmX + dX < minLeft) mOffX = (dX - (diffX = minLeft - elmX));
else if (elmX + elmW + dX > maxLeft) mOffX = (dX - (diffX = maxLeft - elmX - elmW));
// ...and up-down.
if (elmY + dY < minTop) mOffY = (dY - (diffY = minTop - elmY));
else if (elmY + elmH + dY > maxTop) mOffY = (dY - (diffY = maxTop - elmY - elmH));
elmX += diffX;
elmY += diffY;
}
// Assign new info back to the element, with minimum dimensions.
with (element.style) {
left = elmX + 'px';
width = elmW + 'px';
top = elmY + 'px';
height = elmH + 'px';
}
// Evil, dirty, hackish Opera select-as-you-drag fix.
if (window.opera && document.documentElement) {
var oDF = document.getElementById('op-drag-fix');
if (!oDF) {
var oDF = document.createElement('input');
oDF.id = 'op-drag-fix';
oDF.style.display = 'none';
document.body.appendChild(oDF);
}
oDF.focus();
}
if (ondragmove) this.ondragmove(isResize);
// Stop a normal drag event.
cancelEvent(e);
}}; }};
DragResize.prototype.deselect = function(delHandles) { with (this) DragResize.prototype.mouseUp = function(e) { with (this) {
{ // On mouseup, stop dragging, but don't reset handler visibility.
// Immediately stops dragging an element. If 'delHandles' is true, this if (!document.getElementById || !enabled) return;
// remove the handles from the element and clears the element flag,
// completely resetting the .
if (!document.getElementById || !enabled) return; var hRE = new RegExp(myName + '-([trmbl]{2})', '');
if (handle && ondragend) this.ondragend(hRE.test(handle.className));
if (delHandles) deselect(false);
{
if (ondragblur) this.ondragblur();
if (this.resizeHandleSet) this.resizeHandleSet(element, false);
element = null;
}
handle = null;
mOffX = 0;
mOffY = 0;
}}; }};
DragResize.prototype.mouseDown = function(e) { with (this)
{
// Suitable elements are selected for drag/resize on mousedown.
// We also initialise the resize boxes, and drag parameters like mouse position etc.
if (!document.getElementById || !enabled) return true;
var elm = e.target || e.srcElement,
newElement = null,
newHandle = null,
hRE = new RegExp(myName + '-([trmbl]{2})', '');
while (elm)
{
// Loop up the DOM looking for matching elements. Remember one if found.
if (elm.className)
{
if (!newHandle && (hRE.test(elm.className) || isHandle(elm))) newHandle = elm;
if (isElement(elm)) { newElement = elm; break }
}
elm = elm.parentNode;
}
// If this isn't on the last dragged element, call deselect(),
// which will hide its handles and clear element.
if (element && (element != newElement) && allowBlur) deselect(true);
// If we have a new matching element, call select().
if (newElement && (!element || (newElement == element)))
{
// Stop mouse selections if we're dragging a handle.
if (newHandle) cancelEvent(e);
select(newElement, newHandle);
handle = newHandle;
if (handle && ondragstart) this.ondragstart(hRE.test(handle.className));
}
}};
DragResize.prototype.mouseMove = function(e) { with (this)
{
// This continually offsets the dragged element by the difference between the
// last recorded mouse position (mouseX/Y) and the current mouse position.
if (!document.getElementById || !enabled) return true;
// We always record the current mouse position.
mouseX = e.pageX || e.clientX + document.documentElement.scrollLeft;
mouseY = e.pageY || e.clientY + document.documentElement.scrollTop;
// Record the relative mouse movement, in case we're dragging.
// Add any previously stored & ignored offset to the calculations.
var diffX = mouseX - lastMouseX + mOffX;
var diffY = mouseY - lastMouseY + mOffY;
mOffX = mOffY = 0;
// Update last processed mouse positions.
lastMouseX = mouseX;
lastMouseY = mouseY;
// That's all we do if we're not dragging anything.
if (!handle) return true;
// If included in the script, run the resize handle drag routine.
// Let it create an object representing the drag offsets.
var isResize = false;
if (this.resizeHandleDrag && this.resizeHandleDrag(diffX, diffY))
{
isResize = true;
}
else
{
// If the resize drag handler isn't set or returns fase (to indicate the drag was
// not on a resize handle), we must be dragging the whole element, so move that.
// Bounds check left-right...
var dX = diffX, dY = diffY;
if (elmX + dX < minLeft) mOffX = (dX - (diffX = minLeft - elmX));
else if (elmX + elmW + dX > maxLeft) mOffX = (dX - (diffX = maxLeft - elmX - elmW));
// ...and up-down.
if (elmY + dY < minTop) mOffY = (dY - (diffY = minTop - elmY));
else if (elmY + elmH + dY > maxTop) mOffY = (dY - (diffY = maxTop - elmY - elmH));
elmX += diffX;
elmY += diffY;
}
// Assign new info back to the element, with minimum dimensions.
with (element.style)
{
left = elmX + 'px';
width = elmW + 'px';
top = elmY + 'px';
height = elmH + 'px';
}
// Evil, dirty, hackish Opera select-as-you-drag fix.
if (window.opera && document.documentElement)
{
var oDF = document.getElementById('op-drag-fix');
if (!oDF)
{
var oDF = document.createElement('input');
oDF.id = 'op-drag-fix';
oDF.style.display = 'none';
document.body.appendChild(oDF);
}
oDF.focus();
}
if (ondragmove) this.ondragmove(isResize);
// Stop a normal drag event.
cancelEvent(e);
}};
DragResize.prototype.mouseUp = function(e) { with (this)
{
// On mouseup, stop dragging, but don't reset handler visibility.
if (!document.getElementById || !enabled) return;
var hRE = new RegExp(myName + '-([trmbl]{2})', '');
if (handle && ondragend) this.ondragend(hRE.test(handle.className));
deselect(false);
}};
/* Resize Code -- can be deleted if you're not using it. */ /* Resize Code -- can be deleted if you're not using it. */
DragResize.prototype.resizeHandleSet = function(elm, show) { with (this) {
// Either creates, shows or hides the resize handles within an element.
DragResize.prototype.resizeHandleSet = function(elm, show) { with (this) // If we're showing them, and no handles have been created, create 4 new ones.
{ if (!elm._handle_tr) {
// Either creates, shows or hides the resize handles within an element. for (var h = 0; h < handles.length; h++) {
// Create 4 news divs, assign each a generic + specific class.
var hDiv = document.createElement('div');
hDiv.className = myName + ' ' + myName + '-' + handles[h];
elm['_handle_' + handles[h]] = elm.appendChild(hDiv);
}
}
// If we're showing them, and no handles have been created, create 4 new ones. // We now have handles. Find them all and show/hide.
if (!elm._handle_tr) for (var h = 0; h < handles.length; h++) {
{ elm['_handle_' + handles[h]].style.visibility = show ? 'inherit' : 'hidden';
for (var h = 0; h < handles.length; h++) }
{
// Create 4 news divs, assign each a generic + specific class.
var hDiv = document.createElement('div');
hDiv.className = myName + ' ' + myName + '-' + handles[h];
elm['_handle_' + handles[h]] = elm.appendChild(hDiv);
}
}
// We now have handles. Find them all and show/hide.
for (var h = 0; h < handles.length; h++)
{
elm['_handle_' + handles[h]].style.visibility = show ? 'inherit' : 'hidden';
}
}}; }};
DragResize.prototype.resizeHandleDrag = function(diffX, diffY) { with (this) DragResize.prototype.resizeHandleDrag = function(diffX, diffY) { with (this) {
{ // Passed the mouse movement amounts. This function checks to see whether the
// Passed the mouse movement amounts. This function checks to see whether the // drag is from a resize handle created above; if so, it changes the stored
// drag is from a resize handle created above; if so, it changes the stored // elm* dimensions and mOffX/Y.
// elm* dimensions and mOffX/Y.
var hClass = handle && handle.className && var hClass = handle && handle.className &&
handle.className.match(new RegExp(myName + '-([tmblr]{2})')) ? RegExp.$1 : ''; handle.className.match(new RegExp(myName + '-([tmblr]{2})')) ? RegExp.$1 : '';
// If the hClass is one of the resize handles, resize one or two dimensions. // If the hClass is one of the resize handles, resize one or two dimensions.
// Bounds checking is the hard bit -- basically for each edge, check that the // Bounds checking is the hard bit -- basically for each edge, check that the
// element doesn't go under minimum size, and doesn't go beyond its boundary. // element doesn't go under minimum size, and doesn't go beyond its boundary.
var dY = diffY, dX = diffX, processed = false; var dY = diffY, dX = diffX, processed = false;
if (hClass.indexOf('t') >= 0) if (hClass.indexOf('t') >= 0) {
{ rs = 1;
rs = 1; if (elmH - dY < minHeight) mOffY = (dY - (diffY = elmH - minHeight));
if (elmH - dY < minHeight) mOffY = (dY - (diffY = elmH - minHeight)); else if (elmY + dY < minTop) mOffY = (dY - (diffY = minTop - elmY));
else if (elmY + dY < minTop) mOffY = (dY - (diffY = minTop - elmY)); elmY += diffY;
elmY += diffY; elmH -= diffY;
elmH -= diffY; processed = true;
processed = true; }
} if (hClass.indexOf('b') >= 0) {
if (hClass.indexOf('b') >= 0) rs = 1;
{ if (elmH + dY < minHeight) mOffY = (dY - (diffY = minHeight - elmH));
rs = 1; else if (elmY + elmH + dY > maxTop) mOffY = (dY - (diffY = maxTop - elmY - elmH));
if (elmH + dY < minHeight) mOffY = (dY - (diffY = minHeight - elmH)); elmH += diffY;
else if (elmY + elmH + dY > maxTop) mOffY = (dY - (diffY = maxTop - elmY - elmH)); processed = true;
elmH += diffY; }
processed = true; if (hClass.indexOf('l') >= 0) {
} rs = 1;
if (hClass.indexOf('l') >= 0) if (elmW - dX < minWidth) mOffX = (dX - (diffX = elmW - minWidth));
{ else if (elmX + dX < minLeft) mOffX = (dX - (diffX = minLeft - elmX));
rs = 1; elmX += diffX;
if (elmW - dX < minWidth) mOffX = (dX - (diffX = elmW - minWidth)); elmW -= diffX;
else if (elmX + dX < minLeft) mOffX = (dX - (diffX = minLeft - elmX)); processed = true;
elmX += diffX; }
elmW -= diffX; if (hClass.indexOf('r') >= 0) {
processed = true; rs = 1;
} if (elmW + dX < minWidth) mOffX = (dX - (diffX = minWidth - elmW));
if (hClass.indexOf('r') >= 0) else if (elmX + elmW + dX > maxLeft) mOffX = (dX - (diffX = maxLeft - elmX - elmW));
{ elmW += diffX;
rs = 1; processed = true;
if (elmW + dX < minWidth) mOffX = (dX - (diffX = minWidth - elmW)); }
else if (elmX + elmW + dX > maxLeft) mOffX = (dX - (diffX = maxLeft - elmX - elmW)); return processed;
elmW += diffX; }};
processed = true;
}
return processed;
}};