Implement TextWidget (#484)

src/LGraphCanvas.ts

@@ -71,6 +71,7 @@ import { NodeInputSlot, NodeOutputSlot, type ConnectionColorContext } from "./No
 import { ComboWidget } from "./widgets/ComboWidget"
 import { NumberWidget } from "./widgets/NumberWidget"
 import { ButtonWidget } from "./widgets/ButtonWidget"
+import { TextWidget } from "./widgets/TextWidget"
 
 interface IShowSearchOptions {
   node_to?: LGraphNode
@@ -2625,13 +2626,11 @@ export class LGraphCanvas implements ConnectionColorContext {
       break
     case "string":
     case "text":
-      pointer.onClick = () => this.prompt(
-        "Value",
-        widget.value,
-        (v: any) => setWidgetValue(this, node, widget, v),
+      pointer.onClick = () => toClass(TextWidget, widget).onClick({
         e,
-        widget.options ? widget.options.multiline : false,
-      )
+        node,
+        canvas: this,
+      })
       break
     default:
       // Legacy custom widget callback
@@ -5898,36 +5897,7 @@ export class LGraphCanvas implements ConnectionColorContext {
         break
       case "string":
       case "text":
-        ctx.textAlign = "left"
-        ctx.strokeStyle = outline_color
-        ctx.fillStyle = background_color
-        ctx.beginPath()
-
-        if (show_text)
-          ctx.roundRect(margin, y, widget_width - margin * 2, H, [H * 0.5])
-        else
-          ctx.rect(margin, y, widget_width - margin * 2, H)
-        ctx.fill()
-        if (show_text) {
-          if (!w.disabled) ctx.stroke()
-          ctx.save()
-          ctx.beginPath()
-          ctx.rect(margin, y, widget_width - margin * 2, H)
-          ctx.clip()
-
-          // ctx.stroke();
-          ctx.fillStyle = secondary_text_color
-          const label = w.label || w.name
-          if (label != null) ctx.fillText(label, margin * 2, y + H * 0.7)
-          ctx.fillStyle = text_color
-          ctx.textAlign = "right"
-          ctx.fillText(
-            String(w.value).substr(0, 30),
-            widget_width - margin * 2,
-            y + H * 0.7,
-          ) // 30 chars max
-          ctx.restore()
-        }
+        toClass(TextWidget, w).drawWidget(ctx, { y, width: widget_width, show_text, margin })
         break
         // Custom widgets
       default:

src/LGraphNode.ts

@@ -37,6 +37,7 @@ import { ComboWidget } from "./widgets/ComboWidget"
 import { NumberWidget } from "./widgets/NumberWidget"
 import { ButtonWidget } from "./widgets/ButtonWidget"
 import { NodeInputSlot, NodeOutputSlot } from "./NodeSlot"
+import { TextWidget } from "./widgets/TextWidget"
 
 export type NodeId = number | string
 
@@ -1683,6 +1684,10 @@ export class LGraphNode implements Positionable, IPinnable {
     case "button":
       widget = new ButtonWidget(custom_widget)
       break
+    case "text":
+    case "string":
+      widget = new TextWidget(custom_widget)
+      break
     default:
       widget = custom_widget
     }

src/widgets/TextWidget.ts

@@ -0,0 +1,101 @@
+import type { IStringWidget, IWidgetOptions } from "@/types/widgets"
+import { BaseWidget } from "./BaseWidget"
+import type { LGraphNode } from "@/LGraphNode"
+import type { CanvasMouseEvent } from "@/types/events"
+import type { LGraphCanvas } from "@/LGraphCanvas"
+
+export class TextWidget extends BaseWidget implements IStringWidget {
+  // IStringWidget properties
+  declare type: "text" | "string"
+  declare value: string
+  declare options: IWidgetOptions<string>
+
+  constructor(widget: IStringWidget) {
+    super(widget)
+    this.type = widget.type as "text" | "string"
+    this.value = widget.value?.toString() ?? ""
+  }
+
+  /**
+   * Draws the widget
+   * @param ctx - The canvas context
+   * @param options - The options for drawing the widget
+   */
+  override drawWidget(ctx: CanvasRenderingContext2D, options: {
+    y: number
+    width: number
+    show_text?: boolean
+    margin?: number
+  }) {
+    // Store original context attributes
+    const originalTextAlign = ctx.textAlign
+    const originalStrokeStyle = ctx.strokeStyle
+    const originalFillStyle = ctx.fillStyle
+
+    const { y, width, show_text = true, margin = 15 } = options
+    const widget_width = width
+    const H = this.height
+
+    ctx.textAlign = "left"
+    ctx.strokeStyle = this.outline_color
+    ctx.fillStyle = this.background_color
+    ctx.beginPath()
+
+    if (show_text)
+      ctx.roundRect(margin, y, widget_width - margin * 2, H, [H * 0.5])
+    else
+      ctx.rect(margin, y, widget_width - margin * 2, H)
+    ctx.fill()
+
+    if (show_text) {
+      if (!this.disabled) ctx.stroke()
+      ctx.save()
+      ctx.beginPath()
+      ctx.rect(margin, y, widget_width - margin * 2, H)
+      ctx.clip()
+
+      // Draw label
+      ctx.fillStyle = this.secondary_text_color
+      const label = this.label || this.name
+      if (label != null) {
+        ctx.fillText(label, margin * 2, y + H * 0.7)
+      }
+
+      // Draw value
+      ctx.fillStyle = this.text_color
+      ctx.textAlign = "right"
+      ctx.fillText(
+        String(this.value).substr(0, 30), // 30 chars max
+        widget_width - margin * 2,
+        y + H * 0.7,
+      )
+      ctx.restore()
+    }
+
+    // Restore original context attributes
+    ctx.textAlign = originalTextAlign
+    ctx.strokeStyle = originalStrokeStyle
+    ctx.fillStyle = originalFillStyle
+  }
+
+  override onClick(options: {
+    e: CanvasMouseEvent
+    node: LGraphNode
+    canvas: LGraphCanvas
+  }) {
+    const { e, node, canvas } = options
+
+    // Show prompt dialog for text input
+    canvas.prompt(
+      "Value",
+      this.value,
+      (v: string) => {
+        if (v !== null) {
+          this.setValue(v, { e, node, canvas })
+        }
+      },
+      e,
+      this.options?.multiline ?? false,
+    )
+  }
+}