Canvas#_onDragLeftStart checks active layer by exact constructor name

[aaclayton]

Originally in GitLab by @stwlam

Environment Details

• Foundry VTT Version: 9.242
• Operating System: Linux (Debian 11)
• How Are You Using Foundry: Native Application (Electron)
• Which Game System: any
• Modules Enabled?: no

Issue Description

Canvas#_onDragLeftStart has a line checking for whether the active layer is the token layer. It fails if a TokenLayer subclass is configured due to an exact constructor name check:

  _onDragLeftStart(event) {

    // Extract event data
    const layer = this.activeLayer;
    const isRuler = game.activeTool === "ruler";
    // ▼ "TokenLayerPF2e" due to CanvasLayer#name getter ▼
    const isCtrlRuler = game.keyboard.isModifierActive(KeyboardManager.MODIFIER_KEYS.CONTROL) && (layer.name === "TokenLayer");