terminal/src/cascadia/TerminalSettingsModel/ApplicationState.idl
Schuyler Rosefield 75e2b5fae7
Persist window layout cont. save multiple windows (#11083)
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## Summary of the Pull Request
Continuation of https://github.com/microsoft/terminal/pull/10972 to handle multiple windows, requires that to be merged first. 

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## References

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## PR Checklist
* [x] Also closes #766
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [ ] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [x] Schema updated.
* [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx

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## Detailed Description of the Pull Request / Additional comments
Rough changelog:
Normally saving is triggered to occur every 30s, or sooner if a window is created/closed. The existing behavior of saving on last close is maintained to bypass that throttling. The automatic saving allows for crash recovery. Additionally all window layouts will be saved upon taking the `quit` action.

For loading we will check if we are the first window, that there are any saved layouts, and if the setting is enabled, and then depending on if we were given command line args or startup actions.

- create a new window for each saved layout, or
- take the first layout for our self and then a new window for each other layout.

This also saves the layout when the quit action is taken.

Misc changes
- A -s,--saved argument was added to the command line to facilitate opening all of the windows with the right settings. This also means that while a terminal session is running you can do wt -s idx to open a copy of window idx. There isn't a stable ordering of which idx each window gets saved as (it is whatever the iteration order of _peasants is), so it is just a cute hack for now.
- All position calculation has been moved up to AppHost this does mean we need to awkwardly pass around positions in a couple of unexpected places, but no solution was perfect.
- Renamed "Open tabs from a previous session" to "Open windows from a previous session". (not reflected in video below)
- Now save runtime tab color and window names
- Only enabled for non-elevated windows
- Add some change tracking to ApplicationState

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## Validation Steps Performed
![output](https://user-images.githubusercontent.com/6185249/131163473-d649d204-a589-41ad-b9d9-c4c0528cb684.gif)
2021-09-27 21:18:39 +00:00

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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
import "Command.idl";
import "GlobalAppSettings.idl";
namespace Microsoft.Terminal.Settings.Model
{
enum InfoBarMessage
{
CloseOnExitInfo = 0,
KeyboardServiceWarning
};
runtimeclass WindowLayout
{
WindowLayout();
static String ToJson(WindowLayout layout);
static WindowLayout FromJson(String json);
Windows.Foundation.Collections.IVector<ActionAndArgs> TabLayout;
Windows.Foundation.IReference<LaunchPosition> InitialPosition;
Windows.Foundation.IReference<Windows.Foundation.Size> InitialSize;
};
[default_interface] runtimeclass ApplicationState {
static ApplicationState SharedInstance();
void Reload();
String FilePath { get; };
Windows.Foundation.Collections.IVector<WindowLayout> PersistedWindowLayouts { get; set; };
Windows.Foundation.Collections.IVector<String> RecentCommands { get; set; };
Windows.Foundation.Collections.IVector<InfoBarMessage> DismissedMessages { get; set; };
}
}