317 lines
10 KiB
JavaScript
317 lines
10 KiB
JavaScript
|
|
ElmRuntime.Render.Element = function() {
|
|
'use strict';
|
|
|
|
var Utils = ElmRuntime.use(ElmRuntime.Render.Utils);
|
|
var newElement = Utils.newElement, extract = Utils.extract,
|
|
addTransform = Utils.addTransform, removeTransform = Utils.removeTransform,
|
|
fromList = Utils.fromList, eq = Utils.eq;
|
|
|
|
function setProps(props, e) {
|
|
e.style.width = (props.width |0) + 'px';
|
|
e.style.height = (props.height|0) + 'px';
|
|
if (props.opacity !== 1) { e.style.opacity = props.opacity; }
|
|
if (props.color.ctor === 'Just') {
|
|
e.style.backgroundColor = extract(props.color._0);
|
|
}
|
|
if (props.tag !== '') { e.id = props.tag; }
|
|
if (props.href !== '') {
|
|
var a = newElement('a');
|
|
a.href = props.href;
|
|
a.style.width = '100%';
|
|
a.style.height = '100%';
|
|
a.style.top = 0;
|
|
a.style.left = 0;
|
|
a.style.display = 'block';
|
|
a.style.position = 'absolute';
|
|
e.style.position = 'relative';
|
|
e.appendChild(a);
|
|
}
|
|
if (props.hover.ctor !== '_Tuple0') {
|
|
var overCount = 0;
|
|
e.addEventListener('mouseover', function() {
|
|
if (overCount++ > 0) return;
|
|
props.hover(true);
|
|
});
|
|
e.addEventListener('mouseout', function(evt) {
|
|
if (e.contains(evt.toElement || evt.relatedTarget)) return;
|
|
overCount = 0;
|
|
props.hover(false);
|
|
});
|
|
}
|
|
return e;
|
|
}
|
|
|
|
function image(props, img) {
|
|
switch (img._0.ctor) {
|
|
case 'Plain': return plainImage(img._3);
|
|
case 'Fitted': return fittedImage(props.width, props.height, img._3);
|
|
case 'Cropped': return croppedImage(img,props.width,props.height,img._3);
|
|
case 'Tiled': return tiledImage(img._3);
|
|
}
|
|
}
|
|
|
|
function plainImage(src) {
|
|
var img = newElement('img');
|
|
img.src = src;
|
|
img.name = src;
|
|
img.style.display = "block";
|
|
return img;
|
|
}
|
|
|
|
function tiledImage(src) {
|
|
var div = newElement('div');
|
|
div.style.backgroundImage = 'url(' + src + ')';
|
|
return div;
|
|
}
|
|
|
|
function fittedImage(w, h, src) {
|
|
var div = newElement('div');
|
|
div.style.background = 'url(' + src + ') no-repeat center';
|
|
div.style.webkitBackgroundSize = 'cover';
|
|
div.style.MozBackgroundSize = 'cover';
|
|
div.style.OBackgroundSize = 'cover';
|
|
div.style.backgroundSize = 'cover';
|
|
return div;
|
|
}
|
|
|
|
function croppedImage(elem, w, h, src) {
|
|
var pos = elem._0._0;
|
|
var e = newElement('div');
|
|
e.style.overflow = "hidden";
|
|
|
|
var img = newElement('img');
|
|
img.onload = function() {
|
|
var sw = w / elem._1, sh = h / elem._2;
|
|
img.style.width = ((this.width * sw)|0) + 'px';
|
|
img.style.height = ((this.height * sh)|0) + 'px';
|
|
img.style.marginLeft = ((- pos._0 * sw)|0) + 'px';
|
|
img.style.marginTop = ((- pos._1 * sh)|0) + 'px';
|
|
};
|
|
img.src = src;
|
|
img.name = src;
|
|
e.appendChild(img);
|
|
return e;
|
|
}
|
|
|
|
function goIn(e) { e.style.position = 'absolute'; return e; }
|
|
function goDown(e) { return e }
|
|
function goRight(e) { e.style.styleFloat = e.style.cssFloat = "left"; return e; }
|
|
function flowWith(f, array) {
|
|
var container = newElement('div');
|
|
for (var i = array.length; i--; ) {
|
|
container.appendChild(f(render(array[i])));
|
|
}
|
|
return container;
|
|
}
|
|
|
|
function flow(dir,elist) {
|
|
var array = fromList(elist);
|
|
switch(dir.ctor) {
|
|
case "DDown": array.reverse();
|
|
case "DUp": return flowWith(goDown,array);
|
|
case "DRight": array.reverse();
|
|
case "DLeft": return flowWith(goRight,array);
|
|
case "DOut": array.reverse();
|
|
case "DIn": return flowWith(goIn,array);
|
|
}
|
|
}
|
|
|
|
function toPos(pos) {
|
|
switch(pos.ctor) {
|
|
case "Absolute": return pos._0 + "px";
|
|
case "Relative": return (pos._0 * 100) + "%";
|
|
}
|
|
}
|
|
|
|
// must clear right, left, top, bottom, and transform
|
|
// before calling this function
|
|
function setPos(pos,w,h,e) {
|
|
e.style.position = 'absolute';
|
|
e.style.margin = 'auto';
|
|
var transform = '';
|
|
switch(pos.horizontal.ctor) {
|
|
case 'P': e.style.right = toPos(pos.x); e.style.removeProperty('left'); break;
|
|
case 'Z': transform = 'translateX(' + ((-w/2)|0) + 'px) ';
|
|
case 'N': e.style.left = toPos(pos.x); e.style.removeProperty('right'); break;
|
|
}
|
|
switch(pos.vertical.ctor) {
|
|
case 'N': e.style.bottom = toPos(pos.y); e.style.removeProperty('top'); break;
|
|
case 'Z': transform += 'translateY(' + ((-h/2)|0) + 'px)';
|
|
case 'P': e.style.top = toPos(pos.y); e.style.removeProperty('bottom'); break;
|
|
}
|
|
if (transform !== '') addTransform(e.style, transform);
|
|
return e;
|
|
}
|
|
|
|
function container(pos,elem) {
|
|
var e = render(elem);
|
|
setPos(pos, elem.props.width, elem.props.height, e);
|
|
var div = newElement('div');
|
|
div.style.position = 'relative';
|
|
div.style.overflow = 'hidden';
|
|
div.appendChild(e);
|
|
return div;
|
|
}
|
|
|
|
function rawHtml(elem) {
|
|
var html = elem.html;
|
|
var args = elem.args;
|
|
var guid = elem.guid;
|
|
|
|
var div = newElement('div');
|
|
div.innerHTML = html;
|
|
div.style.visibility = "hidden";
|
|
document.body.appendChild(div);
|
|
|
|
for (var i = args.length; i--; ) {
|
|
var arg = args[i];
|
|
var span = document.getElementById('md-' + guid + '-' + i);
|
|
if (arg.isText) {
|
|
span.innerHTML = arg;
|
|
} else {
|
|
span.style.display = 'block';
|
|
span.style.width = arg.props.width + 'px';
|
|
span.style.height = arg.props.height + 'px';
|
|
span.appendChild(render(arg));
|
|
}
|
|
}
|
|
document.body.removeChild(div);
|
|
div.style.visibility = 'visible';
|
|
return div;
|
|
}
|
|
|
|
function render(elem) { return setProps(elem.props, makeElement(elem)); }
|
|
function makeElement(e) {
|
|
var elem = e.element;
|
|
switch(elem.ctor) {
|
|
case 'Image': return image(e.props, elem);
|
|
case 'Flow': return flow(elem._0, elem._1);
|
|
case 'Container': return container(elem._0, elem._1);
|
|
case 'Spacer': return newElement('div');
|
|
case 'RawHtml': return rawHtml(elem);
|
|
case 'Custom': return elem.render(elem.model);
|
|
}
|
|
}
|
|
|
|
function update(node, curr, next) {
|
|
if (node.tagName === 'A') { node = node.firstChild; }
|
|
if (curr.props.id === next.props.id) return updateProps(node, curr, next);
|
|
if (curr.element.ctor !== next.element.ctor) {
|
|
node.parentNode.replaceChild(render(next),node);
|
|
return true;
|
|
}
|
|
var nextE = next.element, currE = curr.element;
|
|
switch(nextE.ctor) {
|
|
case "Spacer": break;
|
|
case "RawHtml":
|
|
if (nextE.guid !== currE.guid) {
|
|
node.parentNode.replaceChild(render(next),node);
|
|
return true;
|
|
}
|
|
var nargs = nextE.args;
|
|
var cargs = currE.args;
|
|
for (var i = nargs.length; i--; ) {
|
|
var narg = nargs[i];
|
|
var carg = cargs[i]
|
|
if (narg == carg) continue;
|
|
var span = document.getElementById('md-' + currE.guid + '-' + i);
|
|
if (narg.isElement) {
|
|
if (carg.isElement) {
|
|
update(span, carg, narg);
|
|
} else {
|
|
span.style.display = 'block';
|
|
var e = render(narg);
|
|
span.innerHTML = '';
|
|
span.appendChild(e);
|
|
}
|
|
} else {
|
|
span.style.display = 'inline';
|
|
span.innerHTML = narg;
|
|
}
|
|
}
|
|
break;
|
|
case "Image":
|
|
if (nextE._0.ctor === 'Plain') {
|
|
if (nextE._3 !== currE._3) node.src = nextE._3;
|
|
} else if (!eq(nextE,currE) ||
|
|
next.props.width !== curr.props.width ||
|
|
next.props.height !== curr.props.height) {
|
|
node.parentNode.replaceChild(render(next),node);
|
|
return true;
|
|
}
|
|
break;
|
|
case "Flow":
|
|
var arr = fromList(nextE._1);
|
|
for (var i = arr.length; i--; ) { arr[i] = arr[i].element.ctor; }
|
|
if (nextE._0.ctor !== currE._0.ctor) {
|
|
node.parentNode.replaceChild(render(next),node);
|
|
return true;
|
|
}
|
|
var nexts = fromList(nextE._1);
|
|
var kids = node.childNodes;
|
|
if (nexts.length !== kids.length) {
|
|
node.parentNode.replaceChild(render(next),node);
|
|
return true;
|
|
}
|
|
var currs = fromList(currE._1);
|
|
var goDir = function(x) { return x; };
|
|
switch(nextE._0.ctor) {
|
|
case "DDown": case "DUp": goDir = goDown; break;
|
|
case "DRight": case "DLeft": goDir = goRight; break;
|
|
case "DOut": case "DIn": goDir = goIn; break;
|
|
}
|
|
for (var i = kids.length; i-- ;) {
|
|
update(kids[i],currs[i],nexts[i]);
|
|
goDir(kids[i]);
|
|
}
|
|
break;
|
|
case "Container":
|
|
update(node.firstChild, currE._1, nextE._1)
|
|
setPos(nextE._0, nextE._1.props.width, nextE._1.props.height, node.firstChild);
|
|
break;
|
|
case "Custom":
|
|
if (currE.type === nextE.type) {
|
|
var done = nextE.update(node, currE.model, nextE.model);
|
|
if (done) return;
|
|
} else {
|
|
return node.parentNode.replaceChild(render(next), node);
|
|
}
|
|
}
|
|
updateProps(node, curr, next);
|
|
}
|
|
|
|
function updateProps(node, curr, next) {
|
|
var props = next.props, currP = curr.props, e = node;
|
|
if (props.width !== currP.width) e.style.width = (props.width |0) + 'px';
|
|
if (props.height !== currP.height) e.style.height = (props.height|0) + 'px';
|
|
if (props.opacity !== 1 && props.opacity !== currP.opacity) {
|
|
e.style.opacity = props.opacity;
|
|
}
|
|
var nextColor = (props.color.ctor === 'Just' ?
|
|
extract(props.color._0) : '');
|
|
if (e.style.backgroundColor !== nextColor) {
|
|
e.style.backgroundColor = (nextColor === '' ? 'transparent' : nextColor);
|
|
}
|
|
if (props.tag !== currP.tag) { e.id = props.tag; }
|
|
if (props.href !== currP.href) {
|
|
if (currP.href === '') {
|
|
var a = newElement('a');
|
|
a.href = props.href;
|
|
a.style.width = '100%';
|
|
a.style.height = '100%';
|
|
a.style.top = 0;
|
|
a.style.left = 0;
|
|
a.style.display = 'block';
|
|
a.style.position = 'absolute';
|
|
e.style.position = 'relative';
|
|
e.appendChild(a);
|
|
} else {
|
|
node.lastNode.href = props.href;
|
|
}
|
|
}
|
|
}
|
|
|
|
return { render:render, update:update };
|
|
|
|
};
|