Route open providers by request mode

docs/DEV_PLUGINS.md

@@ -97,8 +97,8 @@ Frontend bundles are mounted with a plugin-scoped API created by
   a concrete editor plugin.
 
 Editor/viewer plugins contribute providers with `contributes.openProviders`.
-Workbench selects by resource kind, extension/mime, context (`generic-text`,
-`generic-markdown`, `notes-markdown`), user preference, priority, then
+Workbench selects by resource kind, request mode, extension/mime, context
+(`generic-text`, `generic-markdown`, `notes-markdown`), user preference, priority, then
 deterministic `pluginId/providerId` tie-break. If nothing matches, Workbench
 shows `no-provider` fallback instead of a core editor.
 

docs/PLUGIN_RUNTIME.md

@@ -317,7 +317,8 @@ the Workbench helper.
           {
             "kind": "vault-file",
             "extensions": [".md", ".markdown"],
-            "contexts": ["generic-markdown", "notes-markdown"]
+            "contexts": ["generic-markdown", "notes-markdown"],
+            "modes": ["view"]
           },
           {
             "kind": "vault-file",
@@ -333,7 +334,7 @@ the Workbench helper.
 ```
 
 Selection uses enabled loaded/degraded provider plugins, resource kind,
-extension/mime, context, user preference, priority, then deterministic
+request mode, extension/mime, context, user preference, priority, then deterministic
 `pluginId/providerId` fallback. If nothing matches, Workbench returns
 `status: "no-provider"` and shows the fallback view instead of a core editor.
 

frontend/src/lib/test/wails-mock.js

@@ -339,8 +339,10 @@
   function providerSupports(provider, request) {
     var ext = requestExtension(request);
     var contextName = requestContextName(request);
+    var mode = String((request && request.mode) || 'view').toLowerCase();
     return (provider.supports || []).some(function (support) {
       if (support.kind && support.kind !== request.kind) return false;
+      if (support.modes && support.modes.length && support.modes.map(function (m) { return String(m).toLowerCase(); }).indexOf(mode) === -1) return false;
       if (support.extensions && support.extensions.length && support.extensions.map(function (e) { return String(e).toLowerCase(); }).indexOf(ext) === -1) return false;
       if (support.contexts && support.contexts.length && support.contexts.indexOf(contextName) === -1) return false;
       return true;

frontend/wailsjs/go/models.ts

@@ -25,6 +25,7 @@ export namespace api {
 	    mime?: string[];
 	    extensions?: string[];
 	    contexts?: string[];
+	    modes?: string[];
 	
 	    static createFrom(source: any = {}) {
 	        return new FlatOpenProviderSupport(source);
@@ -36,6 +37,7 @@ export namespace api {
 	        this.mime = source["mime"];
 	        this.extensions = source["extensions"];
 	        this.contexts = source["contexts"];
+	        this.modes = source["modes"];
 	    }
 	}
 	export class FlatOpenProvider {
@@ -534,6 +536,7 @@ export namespace plugin {
 	    mime?: string[];
 	    extensions?: string[];
 	    contexts?: string[];
+	    modes?: string[];
 	
 	    static createFrom(source: any = {}) {
 	        return new OpenProviderSupport(source);
@@ -545,6 +548,7 @@ export namespace plugin {
 	        this.mime = source["mime"];
 	        this.extensions = source["extensions"];
 	        this.contexts = source["contexts"];
+	        this.modes = source["modes"];
 	    }
 	}
 	export class ContributionOpenProvider {
@@ -1159,4 +1163,3 @@ export namespace workspace {
 	}
 
 }
-

internal/api/app.go

@@ -249,6 +249,7 @@ type FlatOpenProviderSupport struct {
 	Mime       []string `json:"mime,omitempty"`
 	Extensions []string `json:"extensions,omitempty"`
 	Contexts   []string `json:"contexts,omitempty"`
+	Modes      []string `json:"modes,omitempty"`
 }
 
 type FlatOpenProvider struct {
@@ -316,7 +317,7 @@ func buildContributionSummary(r *contribution.Registry) ContributionSummary {
 	for i, v := range regOpenProviders {
 		supports := make([]FlatOpenProviderSupport, len(v.Item.Supports))
 		for j, s := range v.Item.Supports {
-			supports[j] = FlatOpenProviderSupport{Kind: s.Kind, Mime: s.Mime, Extensions: s.Extensions, Contexts: s.Contexts}
+			supports[j] = FlatOpenProviderSupport{Kind: s.Kind, Mime: s.Mime, Extensions: s.Extensions, Contexts: s.Contexts, Modes: s.Modes}
 		}
 		openProviders[i] = FlatOpenProvider{
 			PluginID:  v.PluginID,

internal/core/plugin/plugin.go

@@ -152,6 +152,7 @@ type OpenProviderSupport struct {
 	Mime       []string `json:"mime,omitempty"`
 	Extensions []string `json:"extensions,omitempty"`
 	Contexts   []string `json:"contexts,omitempty"`
+	Modes      []string `json:"modes,omitempty"`
 }
 
 // ContributionOpenProvider represents an editor/viewer provider contribution.

internal/core/workbench/router.go

@@ -168,6 +168,9 @@ func providerMatches(request OpenResourceRequest, provider plugin.ContributionOp
 		if support.Kind != request.Kind {
 			continue
 		}
+		if !supportMatchesMode(request, support) {
+			continue
+		}
 		if !supportMatchesExtensionOrMime(request, support) {
 			continue
 		}
@@ -179,6 +182,19 @@ func providerMatches(request OpenResourceRequest, provider plugin.ContributionOp
 	return false
 }
 
+func supportMatchesMode(request OpenResourceRequest, support plugin.OpenProviderSupport) bool {
+	if len(support.Modes) == 0 {
+		return true
+	}
+	mode := strings.ToLower(request.Mode)
+	for _, supported := range support.Modes {
+		if strings.ToLower(supported) == mode {
+			return true
+		}
+	}
+	return false
+}
+
 func supportMatchesExtensionOrMime(request OpenResourceRequest, support plugin.OpenProviderSupport) bool {
 	hasExtensionRules := len(support.Extensions) > 0
 	hasMimeRules := len(support.Mime) > 0

internal/core/workbench/routing_test.go

@@ -91,6 +91,47 @@ func TestSelectProviderFallsBackByPriorityThenID(t *testing.T) {
 	}
 }
 
+func TestSelectProviderHonorsSupportModes(t *testing.T) {
+	r := NewRouter(Preferences{})
+	providers := []contribution.ContributionOpenProvider{
+		provider("preview.plugin", "markdown.preview", 100, "MarkdownPreview", plugin.OpenProviderSupport{
+			Kind:       "vault-file",
+			Extensions: []string{".md"},
+			Contexts:   []string{ContextGenericMarkdown},
+			Modes:      []string{"view"},
+		}),
+		provider("editor.plugin", "markdown.editor", 50, "MarkdownEditor", plugin.OpenProviderSupport{
+			Kind:       "vault-file",
+			Extensions: []string{".md"},
+			Contexts:   []string{ContextGenericMarkdown},
+		}),
+	}
+
+	viewProvider, err := r.SelectProvider(OpenResourceRequest{
+		Kind: "vault-file",
+		Path: "Docs/readme.md",
+		Mode: "view",
+	}, providers)
+	if err != nil {
+		t.Fatalf("SelectProvider(view): %v", err)
+	}
+	if viewProvider.Item.ID != "markdown.preview" {
+		t.Fatalf("view provider = %q, want markdown.preview", viewProvider.Item.ID)
+	}
+
+	editProvider, err := r.SelectProvider(OpenResourceRequest{
+		Kind: "vault-file",
+		Path: "Docs/readme.md",
+		Mode: "edit",
+	}, providers)
+	if err != nil {
+		t.Fatalf("SelectProvider(edit): %v", err)
+	}
+	if editProvider.Item.ID != "markdown.editor" {
+		t.Fatalf("edit provider = %q, want markdown.editor", editProvider.Item.ID)
+	}
+}
+
 func TestSelectProviderTieBreaksByPluginIDThenProviderID(t *testing.T) {
 	r := NewRouter(Preferences{})
 	providers := []contribution.ContributionOpenProvider{