Open and close action with single button

Forum|Forum|8 years ago
August 10, 2017
1 reply
544 views

On my HTML5 Canvas stage I have several buttons that perform different actions such as opening an information box, or even a sub-menu. I'm trying to code it so that when a button is clicked it not only opens the relevant action, but it also closes any other actions that were already opened. Furthermore, if the same button is clicked again it will close its own action.

Is there a function that exists to do this? Thanks, appreciate any help - I'm obviously new and trying my hardest to learn it!

My current process for opening is

this.mc_Contact_Box.visible = false;

this.Contact_Btn.addEventListener("click", fl_ClickToShow_4.bind(this));

function fl_ClickToShow_4()

{

this.mc_Contact_Box.visible = true;

}

This topic has been closed for replies.

Correct answer RandomlyFish

Here's one way you could write it:

// Store the last opened window
var lastOpened = null;
// Function for creating a button
function CreateButton (_button, _window) {
     // Create function for clicking on the button
     var click = function () {
          // If a window have been opened previously then hide it
          if (lastOpened != null) {
               lastOpened.visible = false;
          }
          // If the window isn't the same as the last one then show it
          if (_window != lastOpened) {
               _window.visible = true;
               lastOpened = _window;
          } else { // Otherwise clear last opened so that that the window can be opened again
               lastOpened = null;
          }
     }
     // Add an event listener to the button with the function stored in the click variable
     _button.addEventListener("click", click);
}
// Create buttons
CreateButton(this.Button1, this.Window1);
CreateButton(this.Button2, this.Window2);
CreateButton(this.Button3, this.Window3);

R

RandomlyFishCorrect answer

Inspiring

Here's one way you could write it:

// Store the last opened window
var lastOpened = null;
// Function for creating a button
function CreateButton (_button, _window) {
     // Create function for clicking on the button
     var click = function () {
          // If a window have been opened previously then hide it
          if (lastOpened != null) {
               lastOpened.visible = false;
          }
          // If the window isn't the same as the last one then show it
          if (_window != lastOpened) {
               _window.visible = true;
               lastOpened = _window;
          } else { // Otherwise clear last opened so that that the window can be opened again
               lastOpened = null;
          }
     }
     // Add an event listener to the button with the function stored in the click variable
     _button.addEventListener("click", click);
}
// Create buttons
CreateButton(this.Button1, this.Window1);
CreateButton(this.Button2, this.Window2);
CreateButton(this.Button3, this.Window3);

S

SilicaseaAuthor

Participating Frequently

Thank you. The descriptions really help!

So Button1 etc. and Window1 etc. will be the Instance names of those items. I tried it but nothing appears on the stage. Here's my little test .fla file https://s3-ap-southeast-2.amazonaws.com/steve-pottery/button-test.zip

R

RandomlyFish

Inspiring

The reason why you don't see anything, is because there is an error, which prevents anything from running. In chrome, you can open the console by pressing Ctrl + Shift + J on Windows, or Command + Option + J on Mac.

Once the console is open, you should see an error starting with: "Cannot read property 'addEventListener' of undefined". This essentially means that the code is trying to add an event listener to something that doesn't exist.

On the stage there's only Button1 and Window1, so the last two CreateButton calls are attempting to create buttons with symbols that doesn't exist. So you can just remove those two lines and it should work.

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