javascript/NativeScript
1
0
Fork 0
mirror of https://github.com/NativeScript/NativeScript.git synced 2025-08-16 03:31:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix(bindable): parent referenced expression-values now load properly using an update call (#8670)

Browse Source 
closes #8666 
closes #6981 
closes #5054
This commit is contained in:
DimitrisRK
2020-06-30 08:28:04 +03:00
committed by GitHub
parent ec17727e91
commit 6b0028afd7
4 changed files with 78 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
nativescript-core/ui/core/bindable/bindable.ts
View File

@ -469,30 +469,51 @@ export class Binding {
let parentViewAndIndex: { view: ViewBase, index: number };
let parentView;
let addedProps = newProps || [];
if (expression.indexOf(bc.bindingValueKey) > -1) {
let expressionCP = expression;
if (expressionCP.indexOf(bc.bindingValueKey) > -1) {
model[bc.bindingValueKey] = model;
addedProps.push(bc.bindingValueKey);
}
if (expression.indexOf(bc.parentValueKey) > -1) {
parentView = this.getParentView(this.target.get(), bc.parentValueKey).view;
if (parentView) {
model[bc.parentValueKey] = parentView.bindingContext;
addedProps.push(bc.parentValueKey);
}
}
let success: boolean = true;
let parentsArray = expression.match(parentsRegex);
let parentsArray = expressionCP.match(parentsRegex);
if (parentsArray) {
for (let i = 0; i < parentsArray.length; i++) {
// This prevents later checks to mistake $parents[] for $parent
expressionCP = expressionCP.replace(parentsArray[i], "");
parentViewAndIndex = this.getParentView(this.target.get(), parentsArray[i]);
if (parentViewAndIndex.view) {
model[bc.parentsValueKey] = model[bc.parentsValueKey] || {};
model[bc.parentsValueKey][parentViewAndIndex.index] = parentViewAndIndex.view.bindingContext;
addedProps.push(bc.parentsValueKey);
}
else
{
success = false;
}
}
}
if (expressionCP.indexOf(bc.parentValueKey) > -1) {
parentView = this.getParentView(this.target.get(), bc.parentValueKey).view;
if (parentView) {
model[bc.parentValueKey] = parentView.bindingContext;
addedProps.push(bc.parentValueKey);
}
else
{
success = false;
}
}
// For expressions, there are also cases when binding must be updated after component is loaded (e.g. ListView)
if (!success)
{
let targetInstance = this.target.get();
targetInstance.off("loaded", this.loadedHandlerVisualTreeBinding, this);
targetInstance.on("loaded", this.loadedHandlerVisualTreeBinding, this);
}
}
private getSourcePropertyValue() {