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do what we said in the comment

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This commit is contained in:
Bruno Windels 2020-04-29 19:12:12 +02:00
parent f4bb609ab6
commit 6a9315e70a
1 changed files with 22 additions and 17 deletions
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39
src/ui/web/general/TemplateView.js
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@ -75,10 +75,13 @@ export class TemplateView {
} }
mount(options) { mount(options) {
const builder = new TemplateBuilder(this);
if (this._render) { if (this._render) {
this._root = this._render(this, this._value); this._root = this._render(builder, this._value);
} else if (this.render) { // overriden in subclass } else if (this.render) { // overriden in subclass
this._root = this.render(this, this._value); this._root = this.render(builder, this._value);
} else {
throw new Error("no render function passed in, or overriden in subclass");
} }
const parentProvidesUpdates = options && options.parentProvidesUpdates; const parentProvidesUpdates = options && options.parentProvidesUpdates;
if (!parentProvidesUpdates) { if (!parentProvidesUpdates) {
@ -133,6 +136,17 @@ export class TemplateView {
} }
this._subViews.push(view); this._subViews.push(view);
} }
}
// what is passed to render
class TemplateBuilder {
constructor(templateView) {
this._templateView = templateView;
}
get _value() {
return this._templateView._value;
}
_addAttributeBinding(node, name, fn) { _addAttributeBinding(node, name, fn) {
let prevValue = undefined; let prevValue = undefined;
@ -143,7 +157,7 @@ export class TemplateView {
setAttribute(node, name, newValue); setAttribute(node, name, newValue);
} }
}; };
this._addBinding(binding); this._templateView._addBinding(binding);
binding(); binding();
} }
@ -163,7 +177,7 @@ export class TemplateView {
} }
}; };
this._addBinding(binding); this._templateView._addBinding(binding);
return node; return node;
} }
@ -198,7 +212,7 @@ export class TemplateView {
} else if (key.startsWith("on") && key.length > 2 && isFn) { } else if (key.startsWith("on") && key.length > 2 && isFn) {
const eventName = key.substr(2, 1).toLowerCase() + key.substr(3); const eventName = key.substr(2, 1).toLowerCase() + key.substr(3);
const handler = value; const handler = value;
this._addEventListener(node, eventName, handler); this._templateView._addEventListener(node, eventName, handler);
} else if (isFn) { } else if (isFn) {
this._addAttributeBinding(node, key, value); this._addAttributeBinding(node, key, value);
} else { } else {
@ -237,7 +251,7 @@ export class TemplateView {
node = newNode; node = newNode;
} }
}; };
this._addBinding(binding); this._templateView._addBinding(binding);
return node; return node;
} }
@ -250,7 +264,7 @@ export class TemplateView {
} catch (err) { } catch (err) {
return errorToDOM(err); return errorToDOM(err);
} }
this._addSubView(view); this._templateView._addSubView(view);
return root; return root;
} }
@ -281,16 +295,7 @@ export class TemplateView {
} }
for (const tag of TAG_NAMES) { for (const tag of TAG_NAMES) {
TemplateView.prototype[tag] = function(attributes, children) { TemplateBuilder.prototype[tag] = function(attributes, children) {
return this.el(tag, attributes, children); return this.el(tag, attributes, children);
}; };
} }
// TODO: should we an instance of something else than the view itself into the render method? That way you can't call template functions outside of the render method.
// methods that should be on the Template:
// el & all the tag names
// view
// if
// createTemplate
//
// all the binding stuff goes on this class, we just set the bindings on the members of the view.