feat: add notification system with deduplication

Implemented a comprehensive notification system with smart deduplication for LayerForge's "Paste Image" operations. The system prevents duplicate error/warning notifications while providing clear feedback for all clipboard operations including success, failure, and edge cases.

js/utils/ClipboardManager.js

@@ -1,5 +1,5 @@
 import { createModuleLogger } from "./LoggerUtils.js";
-import { showNotification, showInfoNotification } from "./NotificationUtils.js";
+import { showNotification, showInfoNotification, showErrorNotification, showWarningNotification } from "./NotificationUtils.js";
 import { withErrorHandling, createValidationError, createNetworkError, createFileError } from "../ErrorHandler.js";
 import { safeClipspacePaste } from "./ClipspaceUtils.js";
 // @ts-ignore
@@ -18,6 +18,7 @@ export class ClipboardManager {
             if (this.canvas.canvasLayers.internalClipboard.length > 0) {
                 log.info("Found layers in internal clipboard, pasting layers");
                 this.canvas.canvasLayers.pasteLayers();
+                showInfoNotification("Layers pasted from internal clipboard");
                 return true;
             }
             if (preference === 'clipspace') {
@@ -27,9 +28,20 @@ export class ClipboardManager {
                     return true;
                 }
                 log.info("No image found in ComfyUI Clipspace");
+                // Don't show error here, will try system clipboard next
             }
             log.info("Attempting paste from system clipboard");
-            return await this.trySystemClipboardPaste(addMode);
+            const systemSuccess = await this.trySystemClipboardPaste(addMode);
+            if (!systemSuccess) {
+                // No valid image found in any clipboard
+                if (preference === 'clipspace') {
+                    showWarningNotification("No valid image found in Clipspace or system clipboard");
+                }
+                else {
+                    showWarningNotification("No valid image found in clipboard");
+                }
+            }
+            return systemSuccess;
         }, 'ClipboardManager.handlePaste');
         /**
          * Attempts to paste from ComfyUI Clipspace
@@ -51,6 +63,7 @@ export class ClipboardManager {
                     const img = new Image();
                     img.onload = async () => {
                         await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                        showInfoNotification("Image pasted from Clipspace");
                     };
                     img.src = clipspaceImage.src;
                     return true;
@@ -96,6 +109,7 @@ export class ClipboardManager {
                 img.onload = async () => {
                     log.info("Successfully loaded image from backend response");
                     await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                    showInfoNotification("Image loaded from file path");
                     resolve(true);
                 };
                 img.onerror = () => {
@@ -131,6 +145,7 @@ export class ClipboardManager {
                                 img.onload = async () => {
                                     log.info("Successfully loaded image from system clipboard");
                                     await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                                    showInfoNotification("Image pasted from system clipboard");
                                 };
                                 if (event.target?.result) {
                                     img.src = event.target.result;
@@ -252,10 +267,12 @@ export class ClipboardManager {
                     img.onload = async () => {
                         log.info("Successfully loaded image from URL");
                         await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                        showInfoNotification("Image loaded from URL");
                         resolve(true);
                     };
                     img.onerror = () => {
                         log.warn("Failed to load image from URL:", filePath);
+                        showErrorNotification(`Failed to load image from URL\nThe link might be incorrect or may not point to an image file.: ${filePath}`, 5000, true);
                         resolve(false);
                     };
                     img.src = filePath;
@@ -313,6 +330,7 @@ export class ClipboardManager {
                             img.onload = async () => {
                                 log.info("Successfully loaded image from file picker");
                                 await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                                showInfoNotification("Image loaded from selected file");
                                 resolve(true);
                             };
                             img.onerror = () => {

js/utils/NotificationUtils.js

@@ -1,5 +1,7 @@
 import { createModuleLogger } from "./LoggerUtils.js";
 const log = createModuleLogger('NotificationUtils');
+// Store active notifications for deduplication
+const activeNotifications = new Map();
 /**
  * Utility functions for showing notifications to the user
  */
@@ -8,10 +10,50 @@ const log = createModuleLogger('NotificationUtils');
  * @param message - The message to show
  * @param backgroundColor - Background color (default: #4a6cd4)
  * @param duration - Duration in milliseconds (default: 3000)
+ * @param type - Type of notification
+ * @param deduplicate - If true, will not show duplicate messages and will refresh existing ones (default: false)
  */
-export function showNotification(message, backgroundColor = "#4a6cd4", duration = 3000, type = "info") {
+export function showNotification(message, backgroundColor = "#4a6cd4", duration = 3000, type = "info", deduplicate = false) {
     // Remove any existing prefix to avoid double prefixing
     message = message.replace(/^\[Layer Forge\]\s*/, "");
+    // If deduplication is enabled, check if this message already exists
+    if (deduplicate) {
+        const existingNotification = activeNotifications.get(message);
+        if (existingNotification) {
+            log.debug(`Notification already exists, refreshing timer: ${message}`);
+            // Clear existing timeout
+            if (existingNotification.timeout !== null) {
+                clearTimeout(existingNotification.timeout);
+            }
+            // Find the progress bar and restart its animation
+            const progressBar = existingNotification.element.querySelector('div[style*="animation"]');
+            if (progressBar) {
+                // Reset animation
+                progressBar.style.animation = 'none';
+                // Force reflow
+                void progressBar.offsetHeight;
+                // Restart animation
+                progressBar.style.animation = `lf-progress ${duration / 1000}s linear`;
+            }
+            // Set new timeout
+            const newTimeout = window.setTimeout(() => {
+                const notification = existingNotification.element;
+                notification.style.animation = 'lf-fadeout 0.3s ease-out forwards';
+                notification.addEventListener('animationend', () => {
+                    if (notification.parentNode) {
+                        notification.parentNode.removeChild(notification);
+                        activeNotifications.delete(message);
+                        const container = document.getElementById('lf-notification-container');
+                        if (container && container.children.length === 0) {
+                            container.remove();
+                        }
+                    }
+                });
+            }, duration);
+            existingNotification.timeout = newTimeout;
+            return; // Don't create a new notification
+        }
+    }
     // Type-specific config
     const config = {
         success: { icon: "✔️", title: "Success", bg: "#1fd18b" },
@@ -148,6 +190,10 @@ export function showNotification(message, backgroundColor = "#4a6cd4", duration
     body.classList.add('notification-scrollbar');
     let dismissTimeout = null;
     const closeNotification = () => {
+        // Remove from active notifications map if deduplicate is enabled
+        if (deduplicate) {
+            activeNotifications.delete(message);
+        }
         notification.style.animation = 'lf-fadeout 0.3s ease-out forwards';
         notification.addEventListener('animationend', () => {
             if (notification.parentNode) {
@@ -171,40 +217,77 @@ export function showNotification(message, backgroundColor = "#4a6cd4", duration
         progressBar.style.transform = computedStyle.transform;
         progressBar.style.animation = 'lf-progress-rewind 0.5s ease-out forwards';
     };
-    notification.addEventListener('mouseenter', pauseAndRewindTimer);
+    notification.addEventListener('mouseenter', () => {
-    notification.addEventListener('mouseleave', startDismissTimer);
+        pauseAndRewindTimer();
+        // Update stored timeout if deduplicate is enabled
+        if (deduplicate) {
+            const stored = activeNotifications.get(message);
+            if (stored) {
+                stored.timeout = null;
+            }
+        }
+    });
+    notification.addEventListener('mouseleave', () => {
+        startDismissTimer();
+        // Update stored timeout if deduplicate is enabled
+        if (deduplicate) {
+            const stored = activeNotifications.get(message);
+            if (stored) {
+                stored.timeout = dismissTimeout;
+            }
+        }
+    });
     startDismissTimer();
+    // Store notification if deduplicate is enabled
+    if (deduplicate) {
+        activeNotifications.set(message, { element: notification, timeout: dismissTimeout });
+    }
     log.debug(`Notification shown: [Layer Forge] ${message}`);
 }
 /**
  * Shows a success notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showSuccessNotification(message, duration = 3000) {
+export function showSuccessNotification(message, duration = 3000, deduplicate = false) {
-    showNotification(message, undefined, duration, "success");
+    showNotification(message, undefined, duration, "success", deduplicate);
 }
 /**
  * Shows an error notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 5000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showErrorNotification(message, duration = 5000) {
+export function showErrorNotification(message, duration = 5000, deduplicate = false) {
-    showNotification(message, undefined, duration, "error");
+    showNotification(message, undefined, duration, "error", deduplicate);
 }
 /**
  * Shows an info notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showInfoNotification(message, duration = 3000) {
+export function showInfoNotification(message, duration = 3000, deduplicate = false) {
-    showNotification(message, undefined, duration, "info");
+    showNotification(message, undefined, duration, "info", deduplicate);
 }
 /**
  * Shows a warning notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showWarningNotification(message, duration = 3000) {
+export function showWarningNotification(message, duration = 3000, deduplicate = false) {
-    showNotification(message, undefined, duration, "warning");
+    showNotification(message, undefined, duration, "warning", deduplicate);
 }
 /**
  * Shows an alert notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showAlertNotification(message, duration = 3000) {
+export function showAlertNotification(message, duration = 3000, deduplicate = false) {
-    showNotification(message, undefined, duration, "alert");
+    showNotification(message, undefined, duration, "alert", deduplicate);
 }
 /**
  * Shows a sequence of all notification types for debugging purposes.
@@ -214,7 +297,7 @@ export function showAllNotificationTypes(message) {
     types.forEach((type, index) => {
         const notificationMessage = message || `This is a '${type}' notification.`;
         setTimeout(() => {
-            showNotification(notificationMessage, undefined, 3000, type);
+            showNotification(notificationMessage, undefined, 3000, type, false);
         }, index * 400); // Stagger the notifications
     });
 }

src/utils/ClipboardManager.ts

@@ -1,5 +1,5 @@
 import {createModuleLogger} from "./LoggerUtils.js";
-import { showNotification, showInfoNotification } from "./NotificationUtils.js";
+import { showNotification, showInfoNotification, showErrorNotification, showWarningNotification } from "./NotificationUtils.js";
 import { withErrorHandling, createValidationError, createNetworkError, createFileError } from "../ErrorHandler.js";
 import { safeClipspacePaste } from "./ClipspaceUtils.js";
 
@@ -34,6 +34,7 @@ export class ClipboardManager {
         if (this.canvas.canvasLayers.internalClipboard.length > 0) {
             log.info("Found layers in internal clipboard, pasting layers");
             this.canvas.canvasLayers.pasteLayers();
+            showInfoNotification("Layers pasted from internal clipboard");
             return true;
         }
 
@@ -44,10 +45,22 @@ export class ClipboardManager {
                 return true;
             }
             log.info("No image found in ComfyUI Clipspace");
+            // Don't show error here, will try system clipboard next
         }
 
         log.info("Attempting paste from system clipboard");
-        return await this.trySystemClipboardPaste(addMode);
+        const systemSuccess = await this.trySystemClipboardPaste(addMode);
+        
+        if (!systemSuccess) {
+            // No valid image found in any clipboard
+            if (preference === 'clipspace') {
+                showWarningNotification("No valid image found in Clipspace or system clipboard");
+            } else {
+                showWarningNotification("No valid image found in clipboard");
+            }
+        }
+        
+        return systemSuccess;
     }, 'ClipboardManager.handlePaste');
 
     /**
@@ -72,6 +85,7 @@ export class ClipboardManager {
                 const img = new Image();
                 img.onload = async () => {
                     await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                    showInfoNotification("Image pasted from Clipspace");
                 };
                 img.src = clipspaceImage.src;
                 return true;
@@ -105,6 +119,7 @@ export class ClipboardManager {
                                 img.onload = async () => {
                                     log.info("Successfully loaded image from system clipboard");
                                     await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                                    showInfoNotification("Image pasted from system clipboard");
                                 };
                                 if (event.target?.result) {
                                     img.src = event.target.result as string;
@@ -240,15 +255,17 @@ export class ClipboardManager {
                 const img = new Image();
                 img.crossOrigin = 'anonymous';
                 return new Promise((resolve) => {
-                    img.onload = async () => {
+            img.onload = async () => {
-                        log.info("Successfully loaded image from URL");
+                log.info("Successfully loaded image from URL");
-                        await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
-                        resolve(true);
+                showInfoNotification("Image loaded from URL");
-                    };
+                resolve(true);
-                    img.onerror = () => {
+            };
-                        log.warn("Failed to load image from URL:", filePath);
+            img.onerror = () => {
-                        resolve(false);
+                log.warn("Failed to load image from URL:", filePath);
-                    };
+                showErrorNotification(`Failed to load image from URL\nThe link might be incorrect or may not point to an image file.: ${filePath}`, 5000, true);
+                resolve(false);
+            };
                     img.src = filePath;
                 });
             } catch (error) {
@@ -326,6 +343,7 @@ export class ClipboardManager {
             img.onload = async () => {
                 log.info("Successfully loaded image from backend response");
                 await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                showInfoNotification("Image loaded from file path");
                 resolve(true);
             };
             img.onerror = () => {
@@ -366,6 +384,7 @@ export class ClipboardManager {
                             img.onload = async () => {
                                 log.info("Successfully loaded image from file picker");
                                 await this.canvas.canvasLayers.addLayerWithImage(img, {}, addMode);
+                                showInfoNotification("Image loaded from selected file");
                                 resolve(true);
                             };
                             img.onerror = () => {

src/utils/NotificationUtils.ts

@@ -2,6 +2,9 @@ import { createModuleLogger } from "./LoggerUtils.js";
 
 const log = createModuleLogger('NotificationUtils');
 
+// Store active notifications for deduplication
+const activeNotifications = new Map<string, { element: HTMLDivElement, timeout: number | null }>();
+
 /**
  * Utility functions for showing notifications to the user
  */
@@ -11,16 +14,62 @@ const log = createModuleLogger('NotificationUtils');
  * @param message - The message to show
  * @param backgroundColor - Background color (default: #4a6cd4)
  * @param duration - Duration in milliseconds (default: 3000)
+ * @param type - Type of notification
+ * @param deduplicate - If true, will not show duplicate messages and will refresh existing ones (default: false)
  */
 export function showNotification(
     message: string,
     backgroundColor: string = "#4a6cd4",
     duration: number = 3000,
-    type: "success" | "error" | "info" | "warning" | "alert" = "info"
+    type: "success" | "error" | "info" | "warning" | "alert" = "info",
+    deduplicate: boolean = false
 ): void {
     // Remove any existing prefix to avoid double prefixing
     message = message.replace(/^\[Layer Forge\]\s*/, "");
 
+    // If deduplication is enabled, check if this message already exists
+    if (deduplicate) {
+        const existingNotification = activeNotifications.get(message);
+        if (existingNotification) {
+            log.debug(`Notification already exists, refreshing timer: ${message}`);
+            
+            // Clear existing timeout
+            if (existingNotification.timeout !== null) {
+                clearTimeout(existingNotification.timeout);
+            }
+            
+            // Find the progress bar and restart its animation
+            const progressBar = existingNotification.element.querySelector('div[style*="animation"]') as HTMLDivElement;
+            if (progressBar) {
+                // Reset animation
+                progressBar.style.animation = 'none';
+                // Force reflow
+                void progressBar.offsetHeight;
+                // Restart animation
+                progressBar.style.animation = `lf-progress ${duration / 1000}s linear`;
+            }
+            
+            // Set new timeout
+            const newTimeout = window.setTimeout(() => {
+                const notification = existingNotification.element;
+                notification.style.animation = 'lf-fadeout 0.3s ease-out forwards';
+                notification.addEventListener('animationend', () => {
+                    if (notification.parentNode) {
+                        notification.parentNode.removeChild(notification);
+                        activeNotifications.delete(message);
+                        const container = document.getElementById('lf-notification-container');
+                        if (container && container.children.length === 0) {
+                            container.remove();
+                        }
+                    }
+                });
+            }, duration);
+            
+            existingNotification.timeout = newTimeout;
+            return; // Don't create a new notification
+        }
+    }
+
     // Type-specific config
     const config = {
         success: { icon: "✔️", title: "Success", bg: "#1fd18b" },
@@ -172,6 +221,11 @@ export function showNotification(
 
     let dismissTimeout: number | null = null;
     const closeNotification = () => {
+        // Remove from active notifications map if deduplicate is enabled
+        if (deduplicate) {
+            activeNotifications.delete(message);
+        }
+        
         notification.style.animation = 'lf-fadeout 0.3s ease-out forwards';
         notification.addEventListener('animationend', () => {
             if (notification.parentNode) {
@@ -198,46 +252,86 @@ export function showNotification(
         progressBar.style.animation = 'lf-progress-rewind 0.5s ease-out forwards';
     };
 
-    notification.addEventListener('mouseenter', pauseAndRewindTimer);
+    notification.addEventListener('mouseenter', () => {
-    notification.addEventListener('mouseleave', startDismissTimer);
+        pauseAndRewindTimer();
+        // Update stored timeout if deduplicate is enabled
+        if (deduplicate) {
+            const stored = activeNotifications.get(message);
+            if (stored) {
+                stored.timeout = null;
+            }
+        }
+    });
+    
+    notification.addEventListener('mouseleave', () => {
+        startDismissTimer();
+        // Update stored timeout if deduplicate is enabled
+        if (deduplicate) {
+            const stored = activeNotifications.get(message);
+            if (stored) {
+                stored.timeout = dismissTimeout;
+            }
+        }
+    });
     
     startDismissTimer();
+    
+    // Store notification if deduplicate is enabled
+    if (deduplicate) {
+        activeNotifications.set(message, { element: notification, timeout: dismissTimeout });
+    }
+    
     log.debug(`Notification shown: [Layer Forge] ${message}`);
 }
 
 /**
  * Shows a success notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showSuccessNotification(message: string, duration: number = 3000): void {
+export function showSuccessNotification(message: string, duration: number = 3000, deduplicate: boolean = false): void {
-    showNotification(message, undefined, duration, "success");
+    showNotification(message, undefined, duration, "success", deduplicate);
 }
 
 /**
  * Shows an error notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 5000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showErrorNotification(message: string, duration: number = 5000): void {
+export function showErrorNotification(message: string, duration: number = 5000, deduplicate: boolean = false): void {
-    showNotification(message, undefined, duration, "error");
+    showNotification(message, undefined, duration, "error", deduplicate);
 }
 
 /**
  * Shows an info notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showInfoNotification(message: string, duration: number = 3000): void {
+export function showInfoNotification(message: string, duration: number = 3000, deduplicate: boolean = false): void {
-    showNotification(message, undefined, duration, "info");
+    showNotification(message, undefined, duration, "info", deduplicate);
 }
 
 /**
  * Shows a warning notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showWarningNotification(message: string, duration: number = 3000): void {
+export function showWarningNotification(message: string, duration: number = 3000, deduplicate: boolean = false): void {
-    showNotification(message, undefined, duration, "warning");
+    showNotification(message, undefined, duration, "warning", deduplicate);
 }
 
 /**
  * Shows an alert notification
+ * @param message - The message to show
+ * @param duration - Duration in milliseconds (default: 3000)
+ * @param deduplicate - If true, will not show duplicate messages (default: false)
  */
-export function showAlertNotification(message: string, duration: number = 3000): void {
+export function showAlertNotification(message: string, duration: number = 3000, deduplicate: boolean = false): void {
-    showNotification(message, undefined, duration, "alert");
+    showNotification(message, undefined, duration, "alert", deduplicate);
 }
 
 /**
@@ -248,7 +342,7 @@ export function showAllNotificationTypes(message?: string): void {
     types.forEach((type, index) => {
         const notificationMessage = message || `This is a '${type}' notification.`;
         setTimeout(() => {
-            showNotification(notificationMessage, undefined, 3000, type);
+            showNotification(notificationMessage, undefined, 3000, type, false);
         }, index * 400); // Stagger the notifications
     });
 }