
contextMenuInit = function(){
  let eventListenerApplied=false;
  let menuSpecs = new Map();

  const uid = function(){
    return Date.now().toString(36) + Math.random().toString(36).substr(2);
  }

  function showContextMenu(event,element,menuEntries){
    let posx = event.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
    let posy = event.clientY + document.body.scrollTop + document.documentElement.scrollTop; 

    let oldMenu = gradioApp().querySelector('#context-menu')
    if(oldMenu){
      oldMenu.remove()
    }

    let tabButton = gradioApp().querySelector('button')
    let baseStyle = window.getComputedStyle(tabButton)

    const contextMenu = document.createElement('nav')
    contextMenu.id = "context-menu"
    contextMenu.style.background = baseStyle.background
    contextMenu.style.color = baseStyle.color
    contextMenu.style.fontFamily = baseStyle.fontFamily
    contextMenu.style.top = posy+'px'
    contextMenu.style.left = posx+'px'



    const contextMenuList = document.createElement('ul')
    contextMenuList.className = 'context-menu-items';
    contextMenu.append(contextMenuList);

    menuEntries.forEach(function(entry){
      let contextMenuEntry = document.createElement('a')
      contextMenuEntry.innerHTML = entry['name']
      contextMenuEntry.addEventListener("click", function(e) {
        entry['func']();
      })
      contextMenuList.append(contextMenuEntry);

    })

    gradioApp().getRootNode().appendChild(contextMenu)

    let menuWidth = contextMenu.offsetWidth + 4;
    let menuHeight = contextMenu.offsetHeight + 4;

    let windowWidth = window.innerWidth;
    let windowHeight = window.innerHeight;

    if ( (windowWidth - posx) < menuWidth ) {
      contextMenu.style.left = windowWidth - menuWidth + "px";
    }

    if ( (windowHeight - posy) < menuHeight ) {
      contextMenu.style.top = windowHeight - menuHeight + "px";
    }

  }

  function appendContextMenuOption(targetEmementSelector,entryName,entryFunction){
    
    currentItems = menuSpecs.get(targetEmementSelector)
    
    if(!currentItems){
      currentItems = []
      menuSpecs.set(targetEmementSelector,currentItems);
    }
    let newItem = {'id':targetEmementSelector+'_'+uid(), 
                   'name':entryName,
                   'func':entryFunction,
                   'isNew':true}

    currentItems.push(newItem)
    return newItem['id']
  }

  function removeContextMenuOption(uid){

  }

  function addContextMenuEventListener(){
    if(eventListenerApplied){
      return;
    }
    gradioApp().addEventListener("click", function(e) {
      let source = e.composedPath()[0]
      if(source.id && source.indexOf('check_progress')>-1){
        return
      }
      
      let oldMenu = gradioApp().querySelector('#context-menu')
      if(oldMenu){
        oldMenu.remove()
      }
    });
    gradioApp().addEventListener("contextmenu", function(e) {
      let oldMenu = gradioApp().querySelector('#context-menu')
      if(oldMenu){
        oldMenu.remove()
      }
      menuSpecs.forEach(function(v,k) {
        if(e.composedPath()[0].matches(k)){
          showContextMenu(e,e.composedPath()[0],v)
          e.preventDefault()
          return
        }
      })
    });
    eventListenerApplied=true
  
  }

  return [appendContextMenuOption, removeContextMenuOption, addContextMenuEventListener]
}

initResponse = contextMenuInit()
appendContextMenuOption     = initResponse[0]
removeContextMenuOption     = initResponse[1]
addContextMenuEventListener = initResponse[2]


//Start example Context Menu Items
generateOnRepeatId = appendContextMenuOption('#txt2img_generate','Generate forever',function(){
  let genbutton = gradioApp().querySelector('#txt2img_generate');
  let interruptbutton = gradioApp().querySelector('#txt2img_interrupt');
  if(!interruptbutton.offsetParent){
    genbutton.click();
  }
  clearInterval(window.generateOnRepeatInterval)
  window.generateOnRepeatInterval = setInterval(function(){
    if(!interruptbutton.offsetParent){
      genbutton.click();
    }
  },
  500)}
)

cancelGenerateForever = function(){ 
  clearInterval(window.generateOnRepeatInterval) 
  let interruptbutton = gradioApp().querySelector('#txt2img_interrupt');
  if(interruptbutton.offsetParent){
      interruptbutton.click();
  }
}

appendContextMenuOption('#txt2img_interrupt','Cancel generate forever',cancelGenerateForever)
appendContextMenuOption('#txt2img_generate','Cancel generate forever',cancelGenerateForever)

appendContextMenuOption('#roll','Roll three',
  function(){ 
    let rollbutton = gradioApp().querySelector('#roll');
    setTimeout(function(){rollbutton.click()},100)
    setTimeout(function(){rollbutton.click()},200)
    setTimeout(function(){rollbutton.click()},300)
  }
)
//End example Context Menu Items

onUiUpdate(function(){
  addContextMenuEventListener()
});