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[REM] component: remove t-keepalive directive

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We don't see any usecase for it, it makes the code more complex,
and there were still potential unresolved concurrency issues with
it.

Part of task #295
This commit is contained in:
Aaron Bohy
2019-10-30 15:15:32 +01:00
committed by Géry Debongnie
parent 7d249d6f09
commit 08cb83149e
8 changed files with 16 additions and 261 deletions
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doc/reference/component.md
+2 -3
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@@ -391,8 +391,7 @@ scrollbar.
Note that modifying the state is not allowed here. This method is called just
before an actual DOM patch, and is only intended to be used to save some local
DOM state. Also, it will not be called if the component is not in the DOM (this can
happen with components with `t-keepalive`).
DOM state. Also, it will not be called if the component is not in the DOM.
#### `patched(snapshot)`
@@ -402,7 +401,7 @@ likely via a change in its state/props or environment).
This method is not called on the initial render. It is useful to interact
with the DOM (for example, through an external library) whenever the
component was patched. Note that this hook will not be called if the compoent is
not in the DOM (this can happen with components with `t-keepalive`).
not in the DOM.
Updating the component state in this hook is possible, but not encouraged.
One needs to be careful, because updates here will create an additional rendering, which in
doc/reference/qweb.md
+9 -9
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@@ -67,15 +67,15 @@ We present here a list of all standard QWeb directives:
The component system in Owl requires additional directives, to express various
needs. Here is a list of all Owl specific directives:
| Name | Description |
| ------------------------------------------------------ | ----------------------------------------------------------------------------------- |
| `t-component`, `t-props`, `t-keepalive`, `t-asyncroot` | [Defining a sub component](component.md#composition) |
| `t-ref` | [Setting a reference to a dom node or a sub component](component.md#references) |
| `t-key` | [Defining a key (to help virtual dom reconciliation)](component.md#t-key-directive) |
| `t-on-*` | [Event handling](component.md#event-handling) |
| `t-transition` | [Defining an animation](animations.md#css-transitions) |
| `t-slot` | [Rendering a slot](component.md#slots) |
| `t-model` | [Form input bindings](component.md#form-input-bindings) |
| Name | Description |
| ------------------------ | ----------------------------------------------------------------------------------- |
| `t-component`, `t-props` | [Defining a sub component](component.md#composition) |
| `t-ref` | [Setting a reference to a dom node or a sub component](component.md#references) |
| `t-key` | [Defining a key (to help virtual dom reconciliation)](component.md#t-key-directive) |
| `t-on-*` | [Event handling](component.md#event-handling) |
| `t-transition` | [Defining an animation](animations.md#css-transitions) |
| `t-slot` | [Rendering a slot](component.md#slots) |
| `t-model` | [Form input bindings](component.md#form-input-bindings) |
## QWeb Engine