98 lines
2.4 KiB
JavaScript
98 lines
2.4 KiB
JavaScript
/**
|
|
This is a jQuery plugin to support resizing text areas.
|
|
|
|
Originally based off text area resizer by Ryan O'Dell : http://plugins.jquery.com/misc/textarea.js
|
|
|
|
@module $.fn.DivResizer
|
|
**/
|
|
|
|
var div, endDrag, grip, lastMousePos, min, mousePosition, originalDivHeight, originalPos, performDrag, startDrag, wrappedEndDrag, wrappedPerformDrag;
|
|
div = void 0;
|
|
originalPos = void 0;
|
|
originalDivHeight = void 0;
|
|
lastMousePos = 0;
|
|
min = 230;
|
|
grip = void 0;
|
|
wrappedEndDrag = void 0;
|
|
wrappedPerformDrag = void 0;
|
|
|
|
startDrag = function(e, opts) {
|
|
div = $(e.data.el);
|
|
div.addClass('clear-transitions');
|
|
div.blur();
|
|
lastMousePos = mousePosition(e).y;
|
|
originalPos = lastMousePos;
|
|
originalDivHeight = div.height();
|
|
wrappedPerformDrag = (function() {
|
|
return function(e) {
|
|
return performDrag(e, opts);
|
|
};
|
|
})();
|
|
wrappedEndDrag = (function() {
|
|
return function(e) {
|
|
return endDrag(e, opts);
|
|
};
|
|
})();
|
|
$(document).mousemove(wrappedPerformDrag).mouseup(wrappedEndDrag);
|
|
return false;
|
|
};
|
|
|
|
performDrag = function(e, opts) {
|
|
var size, sizePx, thisMousePos;
|
|
thisMousePos = mousePosition(e).y;
|
|
size = originalDivHeight + (originalPos - thisMousePos);
|
|
lastMousePos = thisMousePos;
|
|
|
|
var maxHeight = $(window).height();
|
|
if (opts.maxHeight) {
|
|
maxHeight = opts.maxHeight(maxHeight);
|
|
}
|
|
size = Math.min(size, maxHeight);
|
|
size = Math.max(min, size);
|
|
sizePx = size + "px";
|
|
if (typeof opts.onDrag === "function") {
|
|
opts.onDrag(sizePx);
|
|
}
|
|
div.height(sizePx);
|
|
if (size < min) {
|
|
endDrag(e, opts);
|
|
}
|
|
return false;
|
|
};
|
|
|
|
endDrag = function(e, opts) {
|
|
$(document).unbind("mousemove", wrappedPerformDrag).unbind("mouseup", wrappedEndDrag);
|
|
div.removeClass('clear-transitions');
|
|
div.focus();
|
|
if (typeof opts.resize === "function") {
|
|
opts.resize();
|
|
}
|
|
$(div).trigger("div-resized");
|
|
div = null;
|
|
};
|
|
|
|
mousePosition = function(e) {
|
|
return {
|
|
x: e.clientX + document.documentElement.scrollLeft,
|
|
y: e.clientY + document.documentElement.scrollTop
|
|
};
|
|
};
|
|
|
|
$.fn.DivResizer = function(opts) {
|
|
return this.each(function() {
|
|
var grippie, start, staticOffset;
|
|
div = $(this);
|
|
if (div.hasClass("processed")) return;
|
|
div.addClass("processed");
|
|
staticOffset = null;
|
|
start = function() {
|
|
return function(e) {
|
|
return startDrag(e, opts);
|
|
};
|
|
};
|
|
grippie = div.prepend("<div class='grippie'></div>").find('.grippie').bind("mousedown", {
|
|
el: this
|
|
}, start());
|
|
});
|
|
};
|