From 19cd11118cde7160cd447c81bc965007c0437479 Mon Sep 17 00:00:00 2001
From: Kristóf Marussy <kristof@marussy.com>
Date: Tue, 16 Aug 2022 21:14:50 +0200
Subject: refactor(frondend): improve editor store and theme

Also bumps frontend dependencies.
---
 subprojects/frontend/src/editor/PanelStore.ts | 90 +++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 subprojects/frontend/src/editor/PanelStore.ts

(limited to 'subprojects/frontend/src/editor/PanelStore.ts')

diff --git a/subprojects/frontend/src/editor/PanelStore.ts b/subprojects/frontend/src/editor/PanelStore.ts
new file mode 100644
index 00000000..653d309c
--- /dev/null
+++ b/subprojects/frontend/src/editor/PanelStore.ts
@@ -0,0 +1,90 @@
+import type { Command } from '@codemirror/view';
+import { action, makeObservable, observable } from 'mobx';
+
+import getLogger from '../utils/getLogger';
+
+import type EditorStore from './EditorStore';
+
+const log = getLogger('editor.PanelStore');
+
+export default class PanelStore {
+  state = false;
+
+  constructor(
+    private readonly panelId: string,
+    private readonly openCommand: Command,
+    private readonly closeCommand: Command,
+    private readonly store: EditorStore,
+  ) {
+    makeObservable(this, {
+      state: observable,
+      open: action,
+      close: action,
+      toggle: action,
+      synchronizeStateToView: action,
+    });
+  }
+
+  open(): boolean {
+    return this.setState(true);
+  }
+
+  close(): boolean {
+    return this.setState(false);
+  }
+
+  toggle(): void {
+    this.setState(!this.state);
+  }
+
+  private setState(newState: boolean): boolean {
+    if (this.state === newState) {
+      return false;
+    }
+    log.debug('Show', this.panelId, 'panel', newState);
+    if (newState) {
+      this.doOpen();
+    } else {
+      this.doClose();
+    }
+    this.state = newState;
+    return true;
+  }
+
+  synchronizeStateToView(): void {
+    this.doClose();
+    if (this.state) {
+      this.doOpen();
+    }
+  }
+
+  private doOpen(): void {
+    if (!this.store.doCommand(this.openCommand)) {
+      return;
+    }
+    const { view } = this.store;
+    if (view === undefined) {
+      return;
+    }
+    const buttonQuery = `.cm-${this.panelId}.cm-panel button[name="close"]`;
+    const closeButton = view.dom.querySelector(buttonQuery);
+    if (closeButton !== null) {
+      log.debug('Addig close button callback to', this.panelId, 'panel');
+      // We must remove the event listener from the button that dispatches a transaction
+      // without going through `EditorStore`. This listened is added by CodeMirror,
+      // and we can only remove it by cloning the DOM node: https://stackoverflow.com/a/9251864
+      const closeButtonWithoutListeners = closeButton.cloneNode(true);
+      closeButtonWithoutListeners.addEventListener('click', (event) => {
+        this.close();
+        event.preventDefault();
+      });
+      closeButton.replaceWith(closeButtonWithoutListeners);
+    } else {
+      log.error('Opened', this.panelId, 'panel has no close button');
+    }
+  }
+
+  private doClose(): void {
+    this.store.doCommand(this.closeCommand);
+  }
+}
-- 
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