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feat(views): adds (de)hydration of views and template vars.

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Dehydrated views are views that are structurally fixed, but their
directive instances and viewports are purged.

Support for local bindings is added to the view.
This commit is contained in:
Rado Kirov
2014-12-01 18:41:55 -08:00
parent 5c531f718e
commit 174613067c
11 changed files with 413 additions and 109 deletions
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22
modules/change_detection/src/parser/context_with_variable_bindings.js
View File

@ -1,8 +1,9 @@
import {MapWrapper} from 'facade/collection';
import {BaseException} from 'facade/lang';
export class ContextWithVariableBindings {
parent:any;
/// varBindings are read-only. updating/adding keys is not supported.
/// varBindings' keys are read-only. adding/removing keys is not supported.
varBindings:Map;
constructor(parent:any, varBindings:Map) {
@ -17,4 +18,21 @@ export class ContextWithVariableBindings {
get(name:string) {
return MapWrapper.get(this.varBindings, name);
}
}
set(name:string, value) {
// TODO(rado): consider removing this check if we can guarantee this is not
// exposed to the public API.
if (this.hasBinding(name)) {
MapWrapper.set(this.varBindings, name, value);
} else {
throw new BaseException(
'VariableBindings do not support setting of new keys post-construction.');
}
}
clearValues() {
for (var [k, v] of MapWrapper.iterable(this.varBindings)) {
MapWrapper.set(this.varBindings, k, null);
}
}
}