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EmitCode

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This commit is contained in:
David Greenspan
2013-10-28 20:15:03 -07:00
parent 03312eb0a0
commit b85ae3ccc6
1 changed files with 31 additions and 14 deletions
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45
packages/ui/render2.js
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@@ -56,6 +56,8 @@ UI.Tag.defineTag = function (name) {
UI.Tag.CharRef = makeTagFunc('CharRef');
// e.g. `Comment("foo")`
UI.Tag.Comment = makeTagFunc('Comment');
// e.g. `EmitCode("foo()")`
UI.Tag.EmitCode = makeTagFunc('EmitCode');
_.each(allElementNames, UI.Tag.defineTag);
@@ -80,6 +82,8 @@ var materialize = function (node, parentNode, beforeNode) {
parentNode.insertBefore(document.createTextNode(node.attrs.str), beforeNode);
} else if (node.tagName === 'Comment') {
parentNode.insertBefore(document.createComment(sanitizeComment(node[0])));
} else if (node.tagName === 'EmitCode') {
throw new Error("EmitCode node can only be processed by toCode");
} else {
var elem = document.createElement(node.tagName);
if (node.attrs) {
@@ -100,6 +104,9 @@ var materialize = function (node, parentNode, beforeNode) {
}
} else if (typeof node === 'string') {
parentNode.insertBefore(document.createTextNode(node), beforeNode);
} else if (typeof node === 'function') {
// XXX make this reactive...
materialize(node(), parentNode, beforeNode);
} else if (node == null) {
// null or undefined.
// do nothing.
@@ -178,6 +185,8 @@ var toHTML = function (node) {
result += node.attrs.html;
} else if (node.tagName === 'Comment') {
result += '<!--' + sanitizeComment(node[0]) + '-->';
} else if (node.tagName === 'EmitCode') {
throw new Error("EmitCode node can only be processed by toCode");
} else {
// XXX handle void elements, like BR
result += '<' + properCaseTagName(node.tagName);
@@ -200,6 +209,8 @@ var toHTML = function (node) {
}
} else if (typeof node === 'string') {
result += node.replace(/&/g, '&amp;').replace(/</g, '&lt;');
} else if (typeof node === 'function') {
result += toHTML(node());
} else if (node == null) {
// null or undefined.
// do nothing.
@@ -225,22 +236,26 @@ var toCode = function (node) {
// Tag or array
if (node.tagName) {
// Tag
result += 'UI.Tag.' + node.tagName + '(';
var argStrs = [];
if (node.attrs) {
var kvStrs = [];
_.each(node.attrs, function (v, k) {
kvStrs.push((/^[a-zA-Z]+$/.test(k) ? k : toJSLiteral(k)) + ': ' +
attributeValueToCode(v));
if (node.tagName === 'EmitCode') {
result += node[0];
} else {
result += 'UI.Tag.' + node.tagName + '(';
var argStrs = [];
if (node.attrs) {
var kvStrs = [];
_.each(node.attrs, function (v, k) {
kvStrs.push((/^[a-zA-Z]+$/.test(k) ? k : toJSLiteral(k)) + ': ' +
attributeValueToCode(v));
});
argStrs.push('{' + kvStrs.join(', ') + '}');
}
_.each(node, function (child) {
argStrs.push(toCode(child));
});
argStrs.push('{' + kvStrs.join(', ') + '}');
result += argStrs.join(', ') + ')';
}
_.each(node, function (child) {
argStrs.push(toCode(child));
});
result += argStrs.join(', ') + ')';
} else {
// array
result += '[';
@@ -250,6 +265,8 @@ var toCode = function (node) {
}
} else if (typeof node === 'string') {
result += toJSLiteral(node);
} else if (typeof node === 'function') {
throw new Error("Can't convert function object to code string. Use EmitCode instead.");
} else if (node == null) {
// null or undefined.
// do nothing.