Improve performance by only calling getViewState() when necessary

README.md

@@ -20,4 +20,3 @@ obsidianUIMode: preview
 ... and this will always open the note in "preview" mode.
 
 This plug-in also ensures that a note is always opened in the configured default mode (suppose the Obsidian setting has "preview" as default mode but the pane is currently in "source" mode, then opening a new note in that same pane will open in "preview" mode).
-

main.ts

@@ -11,17 +11,18 @@ export default class ViewModeByFrontmatterPlugin extends Plugin {
 				return;
 			}
 
-			let state = leaf.getViewState();
-
 			// ... get frontmatter data and search for a key indicating the desired view mode
 			// and when the given key is present ... set it to the declared mode
 			const fileCache = this.app.metadataCache.getFileCache(view.file);
 			const fileDeclaredUIMode = fileCache !== null && fileCache.frontmatter ? fileCache.frontmatter[this.OBSIDIAN_UI_MODE_KEY] : null;
 
 			if (null !== fileDeclaredUIMode) {
 				if (['source', 'preview', 'live'].includes(fileDeclaredUIMode)
-					&& state.state.mode !== fileDeclaredUIMode) {
+					&& view.getMode() !== fileDeclaredUIMode) {
+					let state = leaf.getViewState();
+
 					state.state.mode = fileDeclaredUIMode;
+
 					leaf.setViewState(state);
 				}
 
@@ -30,8 +31,11 @@ export default class ViewModeByFrontmatterPlugin extends Plugin {
 
 			const defaultViewMode = this.app.vault.config.defaultViewMode ? this.app.vault.config.defaultViewMode : 'source';
 
-			if (state.state.mode !== defaultViewMode) {
+			if (view.getMode() !== defaultViewMode) {
+				let state = leaf.getViewState();
+
 				state.state.mode = defaultViewMode;
+
 				leaf.setViewState(state);
 			}
 		};

manifest.json

@@ -1,9 +1,9 @@
 {
 	"id": "obsidian-view-mode-by-frontmatter",
 	"name": "Force note view mode (preview, source) using front matter",
-	"version": "1.0.0",
+	"version": "1.0.1",
 	"minAppVersion": "0.9.12",
-	"description": "This plugin allows to force the view mode for a note by using front matter: YAML block with 'obsidian_ui_mode' as key.",
+	"description": "This plugin allows to force the view mode for a note by using front matter",
 	"author": "Benny Wydooghe",
 	"authorUrl": "https://i-net.be",
 	"isDesktopOnly": false