state Property

Summary

The state of the injector.

Syntax
TypeScript
JavaScript
Object.defineProperty(InjectionArgs.prototype, 'state', 
   get: function(), 
   set: function(value) 
) 

Property Value

Describes the current state of the injector.

Remarks

Inject or remove custom UI components based on the value of state.

If the value is InjectionState.mounting, then the injector has been mounted into the DOM.

If the value is InjectionState.unmounting, then the injector is about to be removed from the DOM. Any cleanup needed for custom components should be called here to prevent memory leaks.

Example
InjectionManager.ts
InjectionManager.html
export class InjectionManagerExample { 
   public constructor() { 
      if (lt.RasterSupport.kernelExpired) 
         lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null); 
 
      lt.LEADVIEW.InjectionManager.Instance.inject = this.inject; 
   } 
 
   public run = (divID: string): void => { 
      const lv = new lt.LEADVIEW.Viewer(); 
 
      lv.run(null, { 
         'rootDivId': divID 
      }); 
   } 
 
   private inject = (e: lt.LEADVIEW.InjectionArgs) => { 
      /** 
       * Simple example for showcasinbg injection functionality. 
       * We will inject a red square in every area that is capable of being injected. 
       * 
       * Since we are not wiring up any callbacks -- we don't need to perform any 
       * cleanup actions, so we can ignore all unmounting calls. 
       */ 
      if (e.state === lt.LEADVIEW.InjectionState.unmounting) return; 
      switch (e.type) { 
         case lt.LEADVIEW.InjectionType.toolbar: 
            this.injectToolbar(e.data); 
            break; 
         case lt.LEADVIEW.InjectionType.menu: 
            this.injectMenu(e.data); 
            break; 
         case lt.LEADVIEW.InjectionType.annToolbar: 
            this.injectAnnToolbar(e.data) 
            break; 
      } 
   } 
 
   private injectToolbar = (obj: any) => { 
      const injector = obj as lt.LEADVIEW.ToolbarInjector; 
 
      document.getElementById(injector.start).appendChild(this.getRedSquare()); 
      document.getElementById(injector.end).appendChild(this.getRedSquare()); 
   } 
 
   private injectMenu = (obj: any) => { 
      const injector = obj as lt.LEADVIEW.MenuInjector; 
      document.getElementById(injector.start).appendChild(this.getRedSquare()); 
      document.getElementById(injector.end).appendChild(this.getRedSquare()); 
      document.getElementById(injector.tabStart).appendChild(this.getRedSquare()); 
      document.getElementById(injector.tabEnd).appendChild(this.getRedSquare()); 
      document.getElementById(injector.content).appendChild(this.getRedSquare()); 
   } 
 
   private injectAnnToolbar = (obj: any) => { 
      const injector = obj as lt.LEADVIEW.AnnPanelInjector; 
 
      document.getElementById(injector.start).appendChild(this.getRedSquare()); 
      document.getElementById(injector.end).appendChild(this.getRedSquare()); 
   } 
 
   private getRedSquare = () => { 
      const ele = document.createElement('div'); 
      ele.style.width = '10px'; 
      ele.style.height = '10px'; 
      ele.style.backgroundColor = 'red'; 
 
      return ele; 
   } 
} 
<!doctype html> 
<html lang="en"> 
    <title>LV Examples | Injection Manager</title> 
    <head> 
        <script src="https://code.jquery.com/jquery-2.2.4.min.js" integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script> 
 
        <script src="../LT/Leadtools.js"></script> 
        <script src="../LT/Leadtools.Controls.js"></script> 
        <script src="../LT/Leadtools.Annotations.Engine.js"></script> 
        <script src="../LT/Leadtools.Annotations.Designers.js"></script> 
        <script src="../LT/Leadtools.Annotations.Rendering.Javascript.js"></script> 
        <script src="../LT/Leadtools.Annotations.Automation.js"></script> 
        <script src="../LT/Leadtools.ImageProcessing.Main.js"></script> 
        <script src="../LT/Leadtools.ImageProcessing.Color.js"></script> 
        <script src="../LT/Leadtools.ImageProcessing.Core.js"></script> 
        <script src="../LT/Leadtools.ImageProcessing.Effects.js"></script> 
        <script src="../LT/Leadtools.Document.js"></script> 
        <script src="../LT/Leadtools.Document.Viewer.js"></script> 
        <script src="../LT/Leadtools.LEADVIEW.js" defer></script> 
        <link href="../css/Leadtools.LEADVIEW.css" type="text/css" rel="stylesheet"> 
 
        <!-- All typescript files compiled from /src/ will be bundled and dropped into the root folder `bundle.js`--> 
        <script src="../bundle.js" type="text/javascript"></script> 
    </head> 
    <body> 
        <div id="runDemo" style="width: 100%; height: 100vh;"></div> 
    </body> 
 
    <script> 
       window.onload = () => { 
         const example = new window.examples.InjectionManagerExample(); 
         example.run("runDemo"); 
      }; 
    </script> 
</html> 
Requirements

Target Platforms

Help Version 22.0.2023.1.31
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.LEADVIEW Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.