@valtown/codemirror-codeium/dist/plugin.js

codemirror integration for codeium

import { EditorView, keymap } from "@codemirror/view";
import { Prec } from "@codemirror/state";
import { completionDecoration } from "./completionDecoration.js";
import { completionRequester } from "./completionRequester.js";
import { sameKeyCommand, rejectSuggestionCommand, acceptSuggestionCommand, nextSuggestionCommand, startCompletion, } from "./commands.js";
import { codeiumConfig, codeiumOtherDocumentsConfig, } from "./config.js";
import { Language } from "./api/proto/exa/codeium_common_pb/codeium_common_pb.js";
import { copilotIgnore } from "./annotations.js";
/**
 * Clicking a completion accepts it. This figures out
 * whether a given click event is within the completion's area.
 */
function isDecorationClicked(view) {
    let inRange = false;
    const head = view.state.selection.asSingle().ranges.at(0)?.head;
    const stateField = view.state.field(completionDecoration);
    if (head !== undefined && stateField) {
        stateField.decorations?.between(head, head, () => {
            inRange = true;
        });
        return inRange;
    }
    return false;
}
/**
 * Handles the behavior in which if you have a completion like
 *
 * foo|bar
 *
 * (the cursor is at |) and you type an x, it rejects
 * the completion because that isn't part of the suggested
 * code.
 */
function completionPlugin() {
    return EditorView.domEventHandlers({
        keydown(event, view) {
            // Ideally, we handle infighting between
            // the nextSuggestionCommand and this handler
            // by using precedence, but I can't get that to work
            // yet.
            if (event.key === "]" && event.ctrlKey) {
                return false;
            }
            if (event.key !== "Shift" &&
                event.key !== "Control" &&
                event.key !== "Alt" &&
                event.key !== "Meta") {
                return sameKeyCommand(view, event.key);
            }
            return false;
        },
        mouseup(event, view) {
            const target = event.target;
            if (target.nodeName === "BUTTON" &&
                target.dataset.action === "codeium-cycle") {
                nextSuggestionCommand(view);
                event.stopPropagation();
                event.preventDefault();
                return true;
            }
            if (isDecorationClicked(view)) {
                return acceptSuggestionCommand(view);
            }
            return rejectSuggestionCommand(view);
        },
    });
}
/**
 * Next completion map
 */
function nextCompletionPlugin() {
    return keymap.of([
        {
            key: "Ctrl-]",
            run: nextSuggestionCommand,
        },
    ]);
}
/**
 * Changing the editor's focus - blurring it by clicking outside -
 * rejects the suggestion
 */
function viewCompletionPlugin() {
    return EditorView.updateListener.of((update) => {
        if (update.focusChanged) {
            rejectSuggestionCommand(update.view);
        }
    });
}
export { Language, copilotIgnore, codeiumConfig, codeiumOtherDocumentsConfig, nextSuggestionCommand, startCompletion, };
/**
 * A combination of configuration, the keymap, the
 * requester - as a composite extension for simplicity.
 */
export function copilotPlugin(config) {
    return [
        codeiumConfig.of(config),
        completionDecoration,
        Prec.highest(nextCompletionPlugin()),
        Prec.highest(viewCompletionPlugin()),
        Prec.high(completionPlugin()),
        completionRequester(),
    ];
}
/**
 * Returns false if this ViewUpdate is just the plugin
 * adding or removing ghost text, and it should not be
 * considered when saving this CodeMirror state into other
 * systems, like draft recovery.
 */
export function shouldTakeUpdate(update) {
    for (const tr of update.transactions) {
        if (tr.annotation(copilotIgnore) !== undefined) {
            return false;
        }
    }
    return true;
}
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