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feat: Commit moves before running keyboard shortcuts. #564

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Merged
gonfunko merged 3 commits into from
May 29, 2025
Merged

feat: Commit moves before running keyboard shortcuts. #564

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0a0bc47
feat: Commit moves before running keyboard shortcuts.
gonfunko May 29, 2025
b502968
fix: Handle aborting moves.
gonfunko May 29, 2025
d151145
Merge branch 'main' into move-shortcuts
gonfunko May 29, 2025
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49 changes: 49 additions & 0 deletions src/actions/mover.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ import {
registry,
utils,
WorkspaceSvg,
ShortcutRegistry,
} from 'blockly';
import * as Constants from '../constants';
import {Direction, getXYFromDirection} from '../drag_direction';
Expand All @@ -36,6 +37,11 @@ const UNCONSTRAINED_MOVE_DISTANCE = 20;
*/
const CONSTRAINED_ADDITIONAL_PADDING = 70;

/**
* Identifier for a keyboard shortcut that commits the in-progress move.
*/
const COMMIT_MOVE_SHORTCUT = 'commitMove';

/**
* Low-level code for moving blocks with keyboard shortcuts.
*/
Expand Down Expand Up @@ -140,6 +146,47 @@ export class Mover {
// (otherwise dragging will break).
getFocusManager().focusNode(block);
block.getFocusableElement().addEventListener('blur', blurListener);

// Register a keyboard shortcut under the key combos of all existing
// keyboard shortcuts that commits the move before allowing the real
// shortcut to proceed. This avoids all kinds of fun brokenness when
// deleting/copying/otherwise acting on a block in move mode.
const shortcutKeys = Object.values(ShortcutRegistry.registry.getRegistry())
.flatMap((shortcut) => shortcut.keyCodes)
.filter((keyCode) => {
return (
keyCode &&
![
utils.KeyCodes.RIGHT,
utils.KeyCodes.LEFT,
utils.KeyCodes.UP,
utils.KeyCodes.DOWN,
utils.KeyCodes.ENTER,
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@microbit-matt-hillsdon microbit-matt-hillsdon May 29, 2025 •
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Also needs KeyCodes.SPACE from the finish move action alongside ENTER.

Potentially these could be pulled from a list of the move actions from move.ts? Would be helpful in future as we hope to add UI with the ability to rebind shortcuts (though these ones are perhaps less likely to change than some).

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@rachel-fenichel rachel-fenichel May 29, 2025

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And we do anticipate that when all of the keyboard nav code makes it into core, the shortcut actions will directly cancel moves. This setup is necessary because some shortcuts are in core and some are in the plugin. We will keep UI rebinding in mind for design work on that.

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@gonfunko gonfunko May 29, 2025

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We don't actually need space, because this shortcut finishes the move itself; Enter is there to support command-enter to bring up the contextual menu, not to commit the move. But we do need Escape to abort the move, so I added that in (and cleaned up this shortcut in the new common cleanup method introduced in #561).

].includes(
typeof keyCode === 'number'
? keyCode
: parseInt(`${keyCode.split('+').pop()}`),
)
);
})
// Convince TS there aren't undefined values.
.filter((keyCode): keyCode is string | number => !!keyCode);

const commitMoveShortcut = {
name: COMMIT_MOVE_SHORTCUT,
preconditionFn: (workspace: WorkspaceSvg) => {
return !!this.moves.get(workspace);
},
callback: (workspace: WorkspaceSvg) => {
this.finishMove(workspace);
return false;
},
keyCodes: shortcutKeys,
allowCollision: true,
};

ShortcutRegistry.registry.register(commitMoveShortcut);

return true;
}

Expand All @@ -152,6 +199,8 @@ export class Mover {
* @returns True iff move successfully finished.
*/
finishMove(workspace: WorkspaceSvg) {
ShortcutRegistry.registry.unregister(COMMIT_MOVE_SHORTCUT);

clearMoveHints(workspace);

const info = this.moves.get(workspace);
Expand Down
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