Refactored, simplified and removed unused code.
This commit is contained in:
parent
12fc286ca6
commit
3687631d2c
@ -17,48 +17,6 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
root.DragResize = factory();
|
||||
}
|
||||
}(this, function () {
|
||||
|
||||
// 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];
|
||||
}
|
||||
};
|
||||
|
||||
var addEvent = function(o, t, f, l) {
|
||||
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) {
|
||||
o._evts = {};
|
||||
}
|
||||
if (!o._evts[t]) {
|
||||
o._evts[t] = o[n] ? { b: o[n] } : {};
|
||||
o[n] = new Function('e',
|
||||
'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;' +
|
||||
'} return r'
|
||||
);
|
||||
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;
|
||||
}
|
||||
|
||||
function cancelEvent(e, c) {
|
||||
e.returnValue = false;
|
||||
if (e.preventDefault) {
|
||||
@ -83,22 +41,16 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
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];
|
||||
}
|
||||
@ -106,13 +58,13 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
|
||||
|
||||
DragResize.prototype.apply = function(node) {
|
||||
// Adds object event handlers to the specified DOM node.
|
||||
var obj = this;
|
||||
addEvent(node, 'mousedown', function(e) { obj.mouseDown(e) } );
|
||||
addEvent(node, 'mousemove', function(e) { obj.mouseMove(e) } );
|
||||
addEvent(node, 'mouseup', function(e) { obj.mouseUp(e) } );
|
||||
/* Adds object event handlers to the specified DOM node */
|
||||
$(node).bind('mousedown', this.mouseDown.bind(this));
|
||||
$(node).bind('mousemove', this.mouseMove.bind(this));
|
||||
$(node).bind('mouseup', this.mouseUp.bind(this));
|
||||
};
|
||||
|
||||
|
||||
DragResize.prototype.select = function(newElement) {
|
||||
with (this) {
|
||||
// Selects an element for dragging.
|
||||
@ -124,8 +76,6 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
// Elevate it
|
||||
element.style.zIndex = ++zIndex;
|
||||
// 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();
|
||||
@ -185,53 +135,16 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
}
|
||||
};
|
||||
|
||||
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;
|
||||
DragResize.prototype.updateMouseCoordinates = function (e) {
|
||||
/* Update last processed mouse positions */
|
||||
this.mOffX = this.mOffY = 0;
|
||||
this.lastMouseX = e.pageX || e.clientX + document.documentElement.scrollLeft;
|
||||
this.lastMouseY = e.pageY || e.clientY + document.documentElement.scrollTop;
|
||||
};
|
||||
|
||||
// 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';
|
||||
}
|
||||
|
||||
DragResize.prototype.operaHack = function (e) {
|
||||
// Evil, dirty, hackish Opera select-as-you-drag fix.
|
||||
if (window.opera && document.documentElement) {
|
||||
var oDF = document.getElementById('op-drag-fix');
|
||||
@ -243,65 +156,77 @@ Simplified and modified for Converse.js by JC Brand https://opkode.com
|
||||
}
|
||||
oDF.focus();
|
||||
}
|
||||
};
|
||||
|
||||
if (ondragmove) this.ondragmove(isResize);
|
||||
// Stop a normal drag event.
|
||||
cancelEvent(e);
|
||||
}};
|
||||
DragResize.prototype.resizeElement = function (e) {
|
||||
// Let it create an object representing the drag offsets.
|
||||
var resize = this.resizeHandleDrag(e) ? true : false;
|
||||
// Assign new info back to the element, with minimum dimensions.
|
||||
this.element.style.width = this.elmW + 'px';
|
||||
this.element.style.height = this.elmH + 'px';
|
||||
this.operaHack();
|
||||
return 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);
|
||||
}};
|
||||
|
||||
DragResize.prototype.resizeHandleDrag = function(diffX, diffY) { with (this) {
|
||||
// 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
|
||||
// elm* dimensions and mOffX/Y.
|
||||
|
||||
var hClass = handle && handle.className &&
|
||||
handle.className.match(new RegExp(myName + '-([tmblr]{2})')) ? RegExp.$1 : '';
|
||||
|
||||
// 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
|
||||
// element doesn't go under minimum size, and doesn't go beyond its boundary.
|
||||
var dY = diffY, dX = diffX, processed = false;
|
||||
if (hClass.indexOf('t') >= 0) {
|
||||
rs = 1;
|
||||
if (elmH - dY < minHeight) mOffY = (dY - (diffY = elmH - minHeight));
|
||||
else if (elmY + dY < minTop) mOffY = (dY - (diffY = minTop - elmY));
|
||||
elmY += diffY;
|
||||
elmH -= diffY;
|
||||
processed = true;
|
||||
DragResize.prototype.mouseMove = function (e) {
|
||||
/* Continuously offsets the dragged element by the difference between the
|
||||
* previous mouse position and the current mouse position.
|
||||
*/
|
||||
if (!this.enabled) return true;
|
||||
if (!this.handle) {
|
||||
// We're not dragging anything
|
||||
this.updateMouseCoordinates(e);
|
||||
return true;
|
||||
}
|
||||
if (hClass.indexOf('b') >= 0) {
|
||||
rs = 1;
|
||||
if (elmH + dY < minHeight) mOffY = (dY - (diffY = minHeight - elmH));
|
||||
else if (elmY + elmH + dY > maxTop) mOffY = (dY - (diffY = maxTop - elmY - elmH));
|
||||
elmH += diffY;
|
||||
processed = true;
|
||||
cancelEvent(this.resizeElement(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);
|
||||
}
|
||||
if (hClass.indexOf('l') >= 0) {
|
||||
rs = 1;
|
||||
if (elmW - dX < minWidth) mOffX = (dX - (diffX = elmW - minWidth));
|
||||
else if (elmX + dX < minLeft) mOffX = (dX - (diffX = minLeft - elmX));
|
||||
elmX += diffX;
|
||||
elmW -= diffX;
|
||||
processed = true;
|
||||
};
|
||||
|
||||
|
||||
DragResize.prototype.resizeHandleDrag = function(e) {
|
||||
/* Checks to see whether the
|
||||
* drag is from a resize handle created above; if so, it changes the stored
|
||||
* elm* dimensions and mOffX/Y.
|
||||
*/
|
||||
var x = e.pageX || e.clientX + document.documentElement.scrollLeft;
|
||||
var y = e.pageY || e.clientY + document.documentElement.scrollTop;
|
||||
var diffX = x - this.lastMouseX + this.mOffX;
|
||||
var diffY = y - this.lastMouseY + this.mOffY;
|
||||
var hClass = this.handle &&
|
||||
this.handle.className &&
|
||||
this.handle.className.match(new RegExp(this.myName + '-([tmblr]{2})')) ? RegExp.$1 : '';
|
||||
|
||||
with (this) {
|
||||
// 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
|
||||
// element doesn't go under minimum size, and doesn't go beyond its boundary.
|
||||
var dY = diffY, dX = diffX, processed = false;
|
||||
if (hClass.indexOf('t') >= 0) {
|
||||
rs = 1;
|
||||
if (elmH - dY < minHeight) mOffY = (dY - (diffY = elmH - minHeight));
|
||||
elmH -= diffY;
|
||||
processed = true;
|
||||
}
|
||||
if (hClass.indexOf('b') >= 0) {
|
||||
rs = 1;
|
||||
if (elmH + dY < minHeight) mOffY = (dY - (diffY = minHeight - elmH));
|
||||
elmH += diffY;
|
||||
processed = true;
|
||||
}
|
||||
this.updateMouseCoordinates(e);
|
||||
return processed;
|
||||
}
|
||||
if (hClass.indexOf('r') >= 0) {
|
||||
rs = 1;
|
||||
if (elmW + dX < minWidth) mOffX = (dX - (diffX = minWidth - elmW));
|
||||
else if (elmX + elmW + dX > maxLeft) mOffX = (dX - (diffX = maxLeft - elmX - elmW));
|
||||
elmW += diffX;
|
||||
processed = true;
|
||||
}
|
||||
return processed;
|
||||
}};
|
||||
};
|
||||
return DragResize;
|
||||
}));
|
||||
|
Loading…
Reference in New Issue
Block a user