use chromium save file picker when available

index.html

@@ -71,6 +71,8 @@
                         <button id="load-button" class="secondary">
                             📄 Load
                         </button>
+
+                        <span id="save-status"></span>
                     </div>
 
                     <button id="export-button">

src/project_save_handler.js

@@ -1,5 +1,5 @@
 import { promptUpload } from "./prompt_upload.js";
-import { downloadFile, slugify } from "./utils.js";
+import { slugify } from "./utils.js";
 import { HtmlExporter } from "./html_exporter.js";
 import { KarlkoderCodec } from "./karlkoder_codec.js";
 
@@ -11,6 +11,7 @@ export class ProjectSaveHandler {
 
         this.htmlExporter = new HtmlExporter(assetProvider);
 
+        this.fileHandles = {}; // Used for Chromium file picker
         this.saveName = null;
         this.isSaved = true;
 
@@ -78,36 +79,39 @@ export class ProjectSaveHandler {
     }
 
     async saveFile() {
-        const filename = prompt("Filename?", this.getSaveFileName());
-        if (!filename) {
-            return;
-        }
-
-        this.saveName = filename;
-        this.isSaved = true;
-
-        downloadFile(
-            filename,
+        const saved = await this.downloadFile(
+            "project",
+            this.getSaveFileName(),
             await KarlkoderCodec.en(
                 this.projectName.value,
                 this.editor.getValue(),
                 await this.assetEditor.getAssets(),
             ),
             ".karlkode",
+            "application/x-karlkode",
         );
+
+        this.isSaved = saved;
+
+        if (globalThis.chrome) {
+            this.showSavedStatus(saved, saved ? "Saved" : "Not saved");
+        }
     }
 
     async exportProject() {
-        const filename = prompt("Filename?", this.getSaveFileName());
-        if (!filename) {
-            return;
-        }
-
-        this.saveName = filename;
-
         const html = await this.htmlExporter.export(this.projectName.value, this.editor.getValue());
 
-        downloadFile(filename, html, ".html", "text/html");
+        const exported = await this.downloadFile(
+            "export",
+            this.getSaveFileName(),
+            html,
+            ".html",
+            "text/html",
+        );
+
+        if (globalThis.chrome) {
+            this.showSavedStatus(exported, exported ? "Exported" : "Not exported");
+        }
     }
 
     getSaveFileName() {
@@ -117,4 +121,72 @@ export class ProjectSaveHandler {
 
         return slugify(this.projectName.value) || "project";
     }
+
+    showSavedStatus(success, status) {
+        const saveStatus = document.querySelector("#save-status");
+        saveStatus.textContent = (success ? "✓ " : "× ") + status;
+        saveStatus.style.backgroundColor = success ? "#43A047" : "#E53935";
+        saveStatus.style.transition = "";
+        saveStatus.style.opacity = 1;
+
+        setTimeout(() => {
+            saveStatus.style.transition = "opacity 1s ease-out";
+            saveStatus.style.opacity = 0;
+        }, 1500);
+    }
+
+    async downloadFile(id, name, content, extension, mime) {
+        if ("showSaveFilePicker" in globalThis) {
+            try {
+                this.fileHandles[id] ??= await globalThis.showSaveFilePicker({
+                    id: "karlkoder",
+                    startIn: "documents",
+                    suggestedName: name + extension,
+                    types: [{
+                        accept: {
+                            [mime]: [extension],
+                        },
+                    }],
+                });
+
+                const stream = await this.fileHandles[id].createWritable();
+                await stream.write(content);
+                await stream.close();
+
+                return true;
+            } catch (e) {
+                // Throws AbortError or NotAllowedError on cancel
+
+                console.log("file picker error", e);
+
+                this.fileHandles[id] = null; // Ask for new file handle next time
+
+                return false;
+            }
+        }
+
+        const filename = prompt("Filename?", name);
+        if (!filename) {
+            return false;
+        }
+
+        this.saveName = filename;
+
+        const blob = new Blob([content], { type: mime });
+        const url = URL.createObjectURL(blob);
+
+        const element = document.createElement("a");
+
+        element.href = url;
+        element.download = filename.endsWith(extension) ? filename : filename + extension;
+        element.style.display = "none";
+
+        document.body.appendChild(element);
+
+        element.click();
+
+        document.body.removeChild(element);
+
+        return true;
+    }
 }

src/utils.js

@@ -1,20 +1,3 @@
-export function downloadFile(filename, content, extension, mime) {
-    const blob = new Blob([content], { type: mime });
-    const url = URL.createObjectURL(blob);
-
-    const element = document.createElement("a");
-
-    element.href = url;
-    element.download = filename.endsWith(extension) ? filename : filename + extension;
-    element.style.display = "none";
-
-    document.body.appendChild(element);
-
-    element.click();
-
-    document.body.removeChild(element);
-}
-
 export function slugify(text) {
     return text
         .split(/\W+/)

style.css

@@ -221,32 +221,6 @@ div#buttons button {
     box-shadow: none;
 }
 
-.dropdown-wrapper {
-    position: relative;
-}
-
-.dropdown-content {
-    display: none;
-    background-color: white;
-    position: absolute;
-    top: 100%;
-    left: 0;
-    right: 0;
-    border-radius: 0.25rem;
-    box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.1);
-}
-
-.dropdown-option {
-    padding: 0.3rem 0.6rem;
-    color: #424242;
-    font-size: 0.8rem;
-    cursor: pointer;
-}
-
-.dropdown-option:hover {
-    background-color: #eee;
-}
-
 button {
     background-color: #087aaf;
     border: none;
@@ -262,6 +236,10 @@ button:hover {
     box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
 }
 
+button:active {
+    background-color: #06577e;
+}
+
 button.secondary {
     background-color: #616161;
 }
@@ -415,6 +393,7 @@ footer {
 
 #project-header-left {
     display: flex;
+    align-items: center;
     gap: 0.5rem;
 }
 
@@ -435,6 +414,14 @@ footer {
     outline: none;
 }
 
+#save-status {
+    white-space: nowrap;
+    font-size: 0.8rem;
+    margin-left: 0.5rem;
+    padding: 0.125rem 0.75rem;
+    border-radius: 0.5rem;
+}
+
 #export-button {
     justify-self: flex-end;
 }