Resizeable Text Fields

Based on Resizeable Textarea 0.1 (https://addons.mozilla.org/de/firefox/addon/3818), original coding by Raik Jürgens. Added support for select lists and horizontal resizing of input fields by Florian Höch. Should now work on all page types (XML/XHTML/you-name-it).

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name           Resizeable Text Fields
// @namespace      http://userscripts.org/scripts/show/42433
// @description    Based on Resizeable Textarea 0.1 (https://addons.mozilla.org/de/firefox/addon/3818), original coding by Raik Jürgens. Added support for select lists and horizontal resizing of input fields by Florian Höch. Should now work on all page types (XML/XHTML/you-name-it).
// @include        *
// @version 0.0.1.20140904104754
// ==/UserScript==

window.resizeableTF =
{
	loaded: false,
	TF: [],
	TF_names: [],
	TF_lineheights: [],
	TF_tags: {
		/*
			directions:
			0 = determine on runtime by looking at size attribute
			1 = only horizontal
			2 = horizontal & vertical
		*/
		'input': {
			directions: 1,
			types: ['text', 'password']
		},
		'pre': {
			directions: 2
		},
		'select': {
			directions: 0
		},
		'textarea': {
			directions: 2
		}
	},

	pageload: function (e) {
		if (!resizeableTF.loaded) {
			resizeableTF.doc = document;
			resizeableTF.rootElem = resizeableTF.doc.getElementsByTagName('body')[0] || resizeableTF.doc.documentElement;
		}
		var TF = []
		for (var tagName in resizeableTF.TF_tags) {
			TF = TF.concat(Array.prototype.slice.call(resizeableTF.doc.getElementsByTagName(tagName)));
		}
		if (TF.length) {
			var i = TF.length, k = resizeableTF.TF.length, curTF_Nr;
			while (i--) {
				var TF_tag = resizeableTF.TF_tags[TF[i].tagName.toLowerCase()]
				if ((TF_tag && (!TF_tag.types || TF_tag.types.indexOf(TF[i].type) > -1)) && (!resizeableTF.loaded || resizeableTF.TF_names.indexOf(TF[i].name) < 0)) {
					resizeableTF.TF[k] = TF[i];
					resizeableTF.TF_names[k] = TF[i].name;
					resizeableTF.TF_lineheights[k] = resizeableTF.getlineheight(TF[i]);
					resizeableTF.newdiv('5' , '1' , 'resizeableTFgripH_', k, 'w' ).addEventListener('mouseout', resizeableTF.hidediv, false);
					if (TF_tag.directions == 2 || (TF_tag.directions == 0 && TF[i].size > 1)) {
						resizeableTF.newdiv('1' , '5' , 'resizeableTFgripV_', k, 'n' ).addEventListener('mouseout', resizeableTF.hidediv, false);
						resizeableTF.newdiv('10', '5', 'resizeableTFgripX_', k, 'se').addEventListener('mouseout', resizeableTF.hidediv, false);
					}
					resizeableTF.TF[k].addEventListener('mousemove', new Function('if (!resizeableTF.isresizing && resizeableTF.curTF_Nr !== ' + k + ') { resizeableTF.curTF_Nr = ' + k + '; resizeableTF.posdiv() }'), false);
					resizeableTF.TF[k].addEventListener('mouseout', resizeableTF.hidediv, false);
					k++;
				}
			}
			if (!resizeableTF.loaded) {
				resizeableTF.newdiv('0', '0', 'resizeableTFshowCursor', '', 'w');
				resizeableTF.CursorDiv = resizeableTF.doc.getElementById('resizeableTFshowCursor');
				resizeableTF.CursorDiv.removeEventListener('mousedown', resizeableTF.activate, true);
				window.addEventListener('resize', resizeableTF.hidedivs, true);
				window.addEventListener('scroll', resizeableTF.hidedivs, true);
			}
		}
		resizeableTF.loaded = true;
	},

	newdiv: function (w, h, id, nr, cu) {
		var grip = this.rootElem.namespaceURI ? this.doc.createElementNS(this.rootElem.namespaceURI, 'div') : this.doc.createElement('div');
		grip.setAttribute('id', id + nr);
		grip.setAttribute('style', 'display: none; border: none; font-size: 1px; line-height: 1px; margin: 0; padding: 0; position: fixed; width: ' + w + 'px; height: ' + h + 'px; cursor: ' + cu + '-resize; left: 0; top: 0; z-index: 2147483647;'); // max possible z-index value 2^32/2-1
		grip.addEventListener('mousedown', this.activate, true);
		this.rootElem.appendChild(grip);
		return grip;
	},

	getpositionabs: function (k, elem) {
		var curElem = elem || this.TF[k];
		var curX = curElem.offsetLeft;
		while (curElem.offsetParent) {
			curX += Math.abs(curElem.offsetParent.offsetLeft) + (curElem.offsetParent.tagName.toLowerCase() != 'table' ? curElem.offsetParent.clientLeft : 0) - curElem.offsetParent.scrollLeft;
			// Math.abs needed for <body> which returns negative offset if it has a border (NOT ok - should be positive)
			// curElem.offsetParent.clientLeft not needed for tables (cell offsetLeft already contains table clientLeft)
			curElem = curElem.offsetParent;
		}
		if (curElem != document.documentElement) curX += document.documentElement.offsetLeft; // <html> returns negative offset if it has a border (OK)
		curElem = elem || this.TF[k];
		var curY = curElem.offsetTop;
		while (curElem.offsetParent) {
			curY += Math.abs(curElem.offsetParent.offsetTop) + (curElem.offsetParent.tagName.toLowerCase() != 'table' ? curElem.offsetParent.clientTop : 0) - curElem.offsetParent.scrollTop;
			// Math.abs needed for <body> which returns negative offset if it has a border (NOT ok - should be positive)
			// curElem.offsetParent.clientTop not needed for tables (cell offsetTop already contains table clientTop)
			curElem = curElem.offsetParent;
		}
		if (curElem != document.documentElement) curY += document.documentElement.offsetTop; // <html> returns negative offset if it has a border (OK)
		return [curX, curY];
	},

	getposition: function (k, elem) {
		var curElem = elem || this.TF[k];
		var curX = curElem.offsetLeft;
		while (curElem.offsetParent) {
			curX += Math.abs(curElem.offsetParent.offsetLeft) + (curElem.offsetParent.tagName.toLowerCase() != 'table' ? curElem.offsetParent.clientLeft : 0) - curElem.offsetParent.scrollLeft;
			// Math.abs needed for <body> which returns negative offset if it has a border (NOT ok - should be positive)
			// curElem.offsetParent.clientLeft not needed for tables (cell offsetLeft already contains table clientLeft)
			curElem = curElem.offsetParent;
		}
		if (curElem != document.documentElement) curX -= document.documentElement.scrollLeft;
		curElem = elem || this.TF[k];
		var curY = curElem.offsetTop;
		while (curElem.offsetParent) {
			curY += Math.abs(curElem.offsetParent.offsetTop) + (curElem.offsetParent.tagName.toLowerCase() != 'table' ? curElem.offsetParent.clientTop : 0) - curElem.offsetParent.scrollTop;
			// Math.abs needed for <body> which returns negative offset if it has a border (NOT ok - should be positive)
			// curElem.offsetParent.clientTop not needed for tables (cell offsetTop already contains table clientTop)
			curElem = curElem.offsetParent;
		}
		if (curElem != document.documentElement) curY -= document.documentElement.scrollTop;
		return [curX, curY];
	},

	getdimensions: function (elem) {
		if (document.compatMode == 'BackCompat' || elem.tagName.toLowerCase() == 'select') {
			var w = elem.offsetWidth;
			var h = elem.offsetHeight;
		}
		else {
			var style = document.defaultView.getComputedStyle(elem, null);
			var w = parseFloat(style.width);
			var h = parseFloat(style.height);
			if (elem.tagName.toLowerCase() == 'td' || elem.tagName.toLowerCase() == 'th') {
				// w += parseFloat(style.paddingLeft);
				// w += parseFloat(style.paddingRight);
				h += parseFloat(style.paddingTop);
				h += parseFloat(style.paddingBottom);
			}
		}
		return [w, h];
	},

	getlineheight: function (elem) {
		var style = document.defaultView.getComputedStyle(elem, null);
		return parseFloat(style.lineHeight);
	},

	posdiv: function (e) {
		resizeableTF.isshown = true;
		var k = resizeableTF.curTF_Nr, hx, hy, hh, vx, vy, vw, xx, xy;
		var curPos = resizeableTF.getposition(k);
		resizeableTF.doc.getElementById('resizeableTFgripH_' + k).style.left        = hx = (curPos[0] + resizeableTF.TF[k].offsetWidth  -  5) + 'px';
		resizeableTF.doc.getElementById('resizeableTFgripH_' + k).style.top         = hy = (curPos[1]                                       ) + 'px';
		var TF_tag = resizeableTF.TF_tags[resizeableTF.TF[k].tagName.toLowerCase()];
		if (TF_tag.directions == 2 || (TF_tag.directions == 0 && resizeableTF.TF[k].size > 1)) {
			resizeableTF.doc.getElementById('resizeableTFgripH_' + k).style.height  = hh = (            resizeableTF.TF[k].offsetHeight -  5) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripV_' + k).style.left    = vx = (curPos[0]                                       ) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripV_' + k).style.top     = vy = (curPos[1] + resizeableTF.TF[k].offsetHeight -  5) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripV_' + k).style.width   = vw = (            resizeableTF.TF[k].offsetWidth  - 10) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripV_' + k).style.display = 'block';
			resizeableTF.doc.getElementById('resizeableTFgripX_' + k).style.left    = xx = (curPos[0] + resizeableTF.TF[k].offsetWidth  - 10) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripX_' + k).style.top     = xy = (curPos[1] + resizeableTF.TF[k].offsetHeight -  5) + 'px';
			resizeableTF.doc.getElementById('resizeableTFgripX_' + k).style.display = 'block';
		}
		else {
			resizeableTF.doc.getElementById('resizeableTFgripH_' + k).style.height  = hh =              resizeableTF.TF[k].offsetHeight       + 'px';
		}
		resizeableTF.doc.getElementById('resizeableTFgripH_' + k).style.display     = 'block';
	},

	activate: function (e) {
		resizeableTF.isresizing = true;
		var curTargetId = e.target.getAttribute('id').split('_');
		resizeableTF.curTarget = curTargetId[0];
		resizeableTF.curTF_Nr = parseInt(curTargetId[1]);
		resizeableTF.curTF = resizeableTF.TF[resizeableTF.curTF_Nr];
		var curPos = resizeableTF.getposition(resizeableTF.curTF_Nr),
			curDim = resizeableTF.getdimensions(resizeableTF.curTF);
		resizeableTF.offset = [
			e.pageX - curPos[0] - curDim[0],
			e.pageY - curPos[1] - curDim[1]
		];
		var elem = resizeableTF.curTF.parentNode;
		// if (elem.tagName.toLowerCase() == 'td' || elem.tagName.toLowerCase() == 'th') {
			// while (elem.tagName.toLowerCase() != 'table') elem = elem.parentNode;
		// }
		with (elem.style)
			resizeableTF.storedDim = [minWidth, minHeight, width, height];
		var parDim = resizeableTF.getdimensions(elem)
		elem.style.minWidth  = parDim[0] + 'px';
		elem.style.minHeight = parDim[1] + 'px';
		resizeableTF.doc.addEventListener('mouseup', resizeableTF.deactivate, true);
		switch(resizeableTF.curTarget){
			case 'resizeableTFgripH':
				resizeableTF.doc.addEventListener('mousemove', resizeableTF.resizeta_h, true);
				resizeableTF.doc.addEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.addEventListener('dragstart', resizeableTF.cancelEvent, true);
				break;
			case 'resizeableTFgripV':
				resizeableTF.doc.addEventListener('mousemove', resizeableTF.resizeta_v, true);
				resizeableTF.doc.addEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.addEventListener('dragstart', resizeableTF.cancelEvent, true);
				break;
			case 'resizeableTFgripX':
				resizeableTF.doc.addEventListener('mousemove', resizeableTF.resizeta_x, true);
				resizeableTF.doc.addEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.addEventListener('dragstart', resizeableTF.cancelEvent, true);
				break;
			}
		resizeableTF.CursorDiv.style.width = resizeableTF.rootElem.offsetWidth + 'px';
		resizeableTF.CursorDiv.style.height = resizeableTF.rootElem.offsetHeight + 'px';
		resizeableTF.CursorDiv.style.cursor = e.target.style.cursor;
		resizeableTF.CursorDiv.style.display = 'block';
		resizeableTF.cancelEvent(e);
	},

	deactivate: function () {
		resizeableTF.isresizing = false;
		var elem = resizeableTF.curTF.parentNode;
		// if (elem.tagName.toLowerCase() == 'td' || elem.tagName.toLowerCase() == 'th') {
			// while (elem.tagName.toLowerCase() != 'table') elem = elem.parentNode;
		// }
		elem.style.minWidth  = resizeableTF.storedDim[0];
		elem.style.minHeight = resizeableTF.storedDim[1];
		// elem.style.width     = resizeableTF.storedDim[2];
		// elem.style.height    = resizeableTF.storedDim[3];
		resizeableTF.doc.removeEventListener('mouseup', resizeableTF.deactivate, true);
		resizeableTF.posdiv();
		switch(resizeableTF.curTarget){
			case 'resizeableTFgripH':
				resizeableTF.doc.removeEventListener('mousemove', resizeableTF.resizeta_h, true);
				resizeableTF.doc.removeEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('dragstart', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('select', resizeableTF.cancelEvent, true);
				break;
			case 'resizeableTFgripV':
				resizeableTF.doc.removeEventListener('mousemove', resizeableTF.resizeta_v, true);
				resizeableTF.doc.removeEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('dragstart', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('select', resizeableTF.cancelEvent, true);
				break;
			case 'resizeableTFgripX':
				resizeableTF.doc.removeEventListener('mousemove', resizeableTF.resizeta_x, true);
				resizeableTF.doc.removeEventListener('draggesture', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('dragstart', resizeableTF.cancelEvent, true);
				resizeableTF.doc.removeEventListener('select', resizeableTF.cancelEvent, true);
				break;
		}
		resizeableTF.CursorDiv.style.width = '0';
		resizeableTF.CursorDiv.style.height = '0';
		resizeableTF.CursorDiv.style.display = 'none';
	},

	hidedivs: function () {
		if (resizeableTF.isshown && !resizeableTF.isresizing) {
			var k = resizeableTF.TF.length;
			while (k--) {
				resizeableTF.curTF_Nr = k;
				resizeableTF.hidediv();
			}
			resizeableTF.isshown = false;
		}
	},

	hidediv: function (e) {
		if (resizeableTF.isshown && !resizeableTF.isresizing) {
			try {
				if (e && e.relatedTarget && e.relatedTarget.id && e.relatedTarget.id.indexOf('resizeableTFgrip') == 0) return;
			}
			catch (exception) {
			};
			var k = resizeableTF.curTF_Nr;
			if (k != undefined && !resizeableTF.isresizing) {
				var grip = resizeableTF.doc.getElementById('resizeableTFgripH_' + k);
				grip.style.display = 'none';
				if (grip = resizeableTF.doc.getElementById('resizeableTFgripV_' + k))
					grip.style.display = 'none';
				if (grip = resizeableTF.doc.getElementById('resizeableTFgripX_' + k))
					grip.style.display = 'none';
				resizeableTF.curTF_Nr = undefined;
			}
		}
	},

	cancelEvent: function (e) {
		e.preventDefault();
		e.stopPropagation();
	},

	resizeta_h: function (e) {
		var curPos = resizeableTF.getposition(resizeableTF.curTF_Nr);
		resizeableTF.curTF.style.minWidth  = Math.max(25, e.pageX - resizeableTF.offset[0] - curPos[0]) + 'px';
		resizeableTF.curTF.style.width     = Math.max(25, e.pageX - resizeableTF.offset[0] - curPos[0]) + 'px';
		resizeableTF.cancelEvent(e);
	},

	resizeta_v: function (e) {
		var curPos = resizeableTF.getposition(resizeableTF.curTF_Nr);
		resizeableTF.curTF.style.minHeight = Math.max(resizeableTF.TF_lineheights[resizeableTF.curTF_Nr], e.pageY - resizeableTF.offset[1] - curPos[1]) + 'px';
		resizeableTF.curTF.style.height    = Math.max(resizeableTF.TF_lineheights[resizeableTF.curTF_Nr], e.pageY - resizeableTF.offset[1] - curPos[1]) + 'px';
		resizeableTF.cancelEvent(e);
	},

	resizeta_x: function (e) {
		var curPos = resizeableTF.getposition(resizeableTF.curTF_Nr);
		resizeableTF.curTF.style.minWidth  = Math.max(25, e.pageX - resizeableTF.offset[0] - curPos[0]) + 'px';
		resizeableTF.curTF.style.width     = Math.max(25, e.pageX - resizeableTF.offset[0] - curPos[0]) + 'px';
		resizeableTF.curTF.style.minHeight = Math.max(resizeableTF.TF_lineheights[resizeableTF.curTF_Nr], e.pageY - resizeableTF.offset[1] - curPos[1]) + 'px';
		resizeableTF.curTF.style.height    = Math.max(resizeableTF.TF_lineheights[resizeableTF.curTF_Nr], e.pageY - resizeableTF.offset[1] - curPos[1]) + 'px';
		resizeableTF.cancelEvent(e);
	}
};

window.addEventListener('load', resizeableTF.pageload, true);
resizeableTF.pageload();