Add setting to only show todo in active file

Might cover #189

src/settings.ts

@@ -7,6 +7,7 @@ export interface TodoSettings {
   todoPageName: string
   showChecked: boolean
   showAllTodos: boolean
+  showOnlyActiveFile: boolean
   autoRefresh: boolean
   groupBy: GroupByType
   subGroups: boolean
@@ -23,6 +24,7 @@ export const DEFAULT_SETTINGS: TodoSettings = {
   todoPageName: 'todo',
   showChecked: false,
   showAllTodos: false,
+  showOnlyActiveFile: false,
   autoRefresh: true,
   subGroups: false,
   groupBy: 'page',
@@ -95,6 +97,18 @@ export class TodoSettingTab extends PluginSettingTab {
         })
       })
 
+    new Setting(this.containerEl)
+      .setName('Show only in currently active file?')
+      .setDesc(
+        'Show only todos present in currently active file?'
+      )
+      .addToggle(toggle => {
+        toggle.setValue(this.plugin.getSettingValue('showOnlyActiveFile'))
+        toggle.onChange(async value => {
+          await this.plugin.updateSettings({showOnlyActiveFile: value})
+        })
+      })
+
     /** GORUPING & SORTING */
 
     new Setting(this.containerEl).setName('Grouping & Sorting')

src/view.ts

@@ -63,6 +63,12 @@ export default class TodoListView extends ItemView {
         await this.refresh()
       }),
     )
+    this.registerEvent(
+      this.app.workspace.on('active-leaf-change', async () => {
+        if (!this.plugin.getSettingValue('showOnlyActiveFile')) return
+        await this.refresh()
+      })
+    )
     this.registerEvent(
       this.app.vault.on('delete', file => this.deleteFile(file.path)),
     )
@@ -126,7 +132,10 @@ export default class TodoListView extends ItemView {
 
   private groupItems() {
     const flattenedItems = Array.from(this.itemsByFile.values()).flat()
-    const searchedItems = flattenedItems.filter(e =>
+    const viewOnlyOpen = this.plugin.getSettingValue('showOnlyActiveFile');
+    const openFile = this.app.workspace.getActiveFile();
+    const filteredItems = viewOnlyOpen ? flattenedItems.filter(i => i.filePath === openFile.path) : flattenedItems;
+    const searchedItems = filteredItems.filter(e =>
       e.originalText.toLowerCase().includes(this.searchTerm.toLowerCase()),
     )
     this.groupedItems = groupTodos(