Scenario: Add support for panes

This is the megathread for tracking all the work related to Panes in the Windows Terminal.

1.0 Features

* [x] Original issue: #532 -> added in #825 * [x] #991 Panes should be resizable with the keyboard. (fixed PR #1207) * [x] #995 The user should be able to navigate the focus of panes with the keyboard, instead of requiring the mouse. (PR #1910) * [x] #993 There's no keyboard shortcut for "ClosePane" * [x] #998 Open panes with a specific profile * [x] #994 There should be some sort of UI to indicate that a particular pane is focused, more than just the blinking cursor. `tmux` accomplishes this by colorizing the separators adjacent to the active pane. Another idea is displaying a small outline around the focused pane (like when tabbing through controls on a webpage). (PR:#3060) * [x] #999 If you click on the separator's between panes, then no panes will be focused (PR #3540) * [x] #3045 Moving focus between panes doesn't always work (PR #3958) * [x] #3544 Add a default keybinding for panes, to enable them by default. (PR #3585) * [x] #2834 Snap to character grid when resizing window (PR #3181) * [x] #3960 Automatic splits similar to tiling window managers

1.x features / bugs

[x] #1756 The user should be able to configure what profile is used for splitting a pane. Currently, the default profile is used, but it's possible a user might want to create a new pane with the parent pane's profile.
[ ] #992 Panes should be resizable with the mouse. The user should be able to drag the separator for a pair of panes, and have the content between them resize as the separator moves.
[ ] #4692 Pane focus movement doesn't remember where it came from

2.0 Features / Bugs

[x] #2398 Move focus to the visually adjacent pane, not just the first pane on the other side of the separator.
- [ ] Also: #4692 Pane focus movement doesn't remember where it came from
[x] #3062 Add a configuration object for focused vs unfocused state
[x] #996 The user should be able to zoom a pane, to make the pane take the entire size of the terminal window temporarily.
[x] #5803 moveFocus to pane using number (See also #5464)
[ ] #3917 Panel split background ignores requestedTheme, follows system app mode
[x] Add a percent parameter to SplitPane #3997
[x] wt split-pane (multiple copies) seems to have occasional focus issues #6586
[x] #2871 Add ~~nextPane and~~ prevPane keybindings (in PR #8183)
[x] #1001 Panes should have an optional motion effect on entrance
[x] Panes should have an animation when they're closed, too #7366

Panes Titlebar Follow-ups - See #4998

[ ] Add title to split window #4717
[x] #7075 Allow moving panes to other tabs
[ ] Panes should have editable titles #7290

Backlog items

[ ] The user should be able to tear-off tabs and dock them as a split (See this comment)
- [ ] #4587 Drag & Drop Tabs to create a Pane
- [ ] Related, but different: Drag entries from the new tab menu to create panes #9229
[ ] #997 A pane doesn't necessarily need to host a terminal. It could potentially host another UIElement. One could imagine enabling a user to quickly open up a Browser pane to search for a particular string without needing to leave the terminal. (spec #1080)
[ ] #3656 Add support for tmux Control Mode
[x] #2634 Support broadcast input (Spec #9365)
[ ] #4259 Open a new pane with the environment vars of the parent
[x] #4340 Choose Direction to Split Pane
[x] A switch panes option? Like a switchLeft, switchRight, switchUp, switchDown, to allow the user to rearrange the panes layout (https://github.com/microsoft/terminal/issues/1000#issuecomment-578665067) (#10638)
[ ] #4922 Swap panes
[x] #4941 Please add support closePaneRight/Left/Up/Down
[x] #5025 Open panes without keybindings
[ ] #6002 Split panes equally in size
[x] #6219 Pass through moveFocus keys when the user has no panes
[x] #6459 Pane focus follows mouse (PR: #8965)
[x] Moving focus with a zoomed pane should just zoom the adjacent pane #7215
[ ] Add a fluent animation for pane zooming #7216
[ ] Pane opening animation should not flash the default pane backdrop #7365
[ ] Use a Clip rect for Pane animations instead of the Width/Height #7436
[ ] Golden Ratio mode #8562
[ ] #3586 Open a new pane by prompting the user for which profile to use
[x] #10665
[x] #10733
[ ] #10757
[x] #10909 Allow moving through panes in ID order
[ ] #12186
[ ] #16083

Theming items

[ ] #3061 Add a setting to manually set the Pane highlight color ~~(PR #3752)~~
- [ ] Add configurable Pane border hover color #8564
[ ] #3063 Add a setting to manually set the Pane border width
[ ] #3708 Add option for more subtle pane focus border

microsoft / terminal