Confirmed users, Bureaucrats and Sysops emeriti
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Quantum/DOM: Difference between revisions
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Tweak Concepts
(More clarification after talking to billm) |
(Tweak Concepts) |
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= Concepts = | = Concepts = | ||
First, a <b>runnable</b> in this context specifically refers to nsIRunnable. However, note that other common things such an nsITimer implementations use nsIRunnable under the hood. Any code that indirectly (and possibly without the knowledge of the author of the consuming code) uses nsIRunnable under the hood also needs to be modified so that the underlying runnable(s) are labeled. | |||
To more precisely specify when one runnable can observe state from another runnable, we need to define some terminology: | |||
A <b>TabGroup</b> is the set of tabs that are related by window.opener. In a session with four tabs, where T1 opens T2 and T3 opens T4, the TabGroups are {T1, T2} and {T3, T4}. <span style="color: red">(XXX Is this specifically about sharing the same opener, or about being reachable through an opener chain? That is, if T5 opens T6 which opens T7, are they all in the same TabGroup? And what if a tab is opened using rel=noopener? Does that start a new group?)</span> Once a tab joins a TabGroup, it never leaves it. TabGroups have the property that two tabs from different TabGroups can never observe each other's state. So a runnable from one TabGroup can run while a runnable from a different TabGroup is paused. | A <b>TabGroup</b> is the set of tabs that are related by window.opener. In a session with four tabs, where T1 opens T2 and T3 opens T4, the TabGroups are {T1, T2} and {T3, T4}. <span style="color: red">(XXX Is this specifically about sharing the same opener, or about being reachable through an opener chain? That is, if T5 opens T6 which opens T7, are they all in the same TabGroup? And what if a tab is opened using rel=noopener? Does that start a new group?)</span> Once a tab joins a TabGroup, it never leaves it. TabGroups have the property that two tabs from different TabGroups can never observe each other's state. So a runnable from one TabGroup can run while a runnable from a different TabGroup is paused. | ||