List component

Similar Questions

• Access a drop-down list component created in fom runtime C++

  Hello everyone.

  I included a file "Settings.qml" as a ComponentDefinition in my file "main.qml" as follows:

  *******************************
  main.qml
  *******************************
  
  Page {
      id: page
  
      //App menu
      Menu.definition: MenuDefinition {
          settingsAction: SettingsActionItem {
              title: "Settings"
              imageSource: "asset:///icons/ic_settings.png"
              onTriggered: {
                  var settings = settingsSheet.createObject(_cam);
                  settings.open();
              }
          }
      }
  
      //Main container
      Container {        Camera {            id: cameraQML            objectName: "cameraQML"        }    }
  
      //Attached objects
      attachedObjects: [
          //*****this is the component definition****
          ComponentDefinition {
              id: settingsSheet
              source: "Settings.qml"
          }
      ]
  }
  

  Then, in the "Settings.qml" file, I have something like that.

  On the crack of onCreationCompleted I call you access of wich C++ function to the cameraQML component and gets the available resolution values and add them to the drop down list component.

  ***********************Settings.qml***********************
  
  Sheet {
      id: settingsSheet
      objectName: "settingsSheet"
      peekEnabled: true
      content: Page {        Container {            DropDown {
                  title: "Capture Resolution"
                  objectName: "resolution"
  
                  options: [
                      Option {
                          text: "16:9"
                          value: 16/9
                      }
                  ]
  
                  onCreationCompleted: {
                      _cam.loadResolutionValues();
                  }
  
                  onSelectedValueChanged: {
                      //_cam.selectResolution(selectedValue);
                  }
              }
          }    }}
  

  The PROBLEM comes when I try to access the menu item drop down because, even if I get error when you call the function findChild(), I do when I try to add Options by calling the add() function:

  ******************applicationui.cpp******************
  
  AbstractPane* root;Camera* cameraQML;DropDown* resolutionsDD;
  
  void AppliactionUI::ApplicationUI() {    //code...    QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);    qml->setContextProperty("_cam", this);    root = qml->createRootObject();    cameraQML = root->findChild("camera");    //code...}void ApplicationUI::loadResolutionValues() {
      QVariantList reslist = camaraQML->supportedCaptureResolutions(CameraMode::Photo);
                  //**I don't get error by calling this function
          resolutionsDD = root->findChild("resolution");
  
          //**The app do crashes when calling any of these three functions
      //resolutionsDD->setTitle("Choose an option");        //resolutionsDD->removeAll();
      //resolutionsDD->remove(resolutionsDD->at(0));    for (int i = 0; i < reslist.count(); i++) {
          qDebug()<<"QVatiant value:"<add(Option::create().text(res.width()+"x"+res.height()).value(reslist[i]));
      }
  }
  

  I thought it was a problem with the type of value, I was put in the service. value() when you create an option, but then I realized that, while trying to change the title from the drop-down list, or delete i ' ts options that the application crashed also.

  This makes me think that the problem is that I'm not a correct reference for component drop-down menu QML due to the fact that this drop-down list does not exist when the application starts and is created until the user opens the Settings.qml file. Also, I think that this is a problem with all that stuff parent and child, but of course, it's just a feeling.

  I'd really appreciate your help on this type of problem. I'm not experienced enough to know what is the right way to get a reference of work to the drop down list component in question in a situation like this

  Thank you very much in advance!

  P.D. I'm sorry, I know that my English is not very good. Hope you do not misunderstand

  Hello
  Very probably findChild returns NULL and a NULL pointer dereference causes the crash. I remember there was problems with findChild during the use of the leaves.

  Try from the drop-down list directly to the function as an argument:

  (1) in applicationui.cpp:

  After:
  QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
  
  Add:
      // This is needed for passing DropDown in function parameters from QML to C++
      qmlRegisterType("bb.cascades", 1, 0, "DropDown");
  

  (2) modify the function declaration for:

  Q_INVOKABLE void loadResolutionValues(bb::cascades::DropDown *dropDown);
  

  (3) in QML:

  DropDown {
    id: dropDown
    ...
    onCreationCompleted: {
       _cam.loadResolutionValues(dropDown)
  
       // _cam.loadResolutionValues(this) // maybe this will also work, but I haven't checked
  
    }
  }
  

• Horizontal scrolling in the list component

  Hello

  I use a list component, which is filled from a textbox control.  I set the horizontal scroll policy to automotive and also we however scrolling does not appear (in the case of auto) or does not move (in the case of it).  Is there a setting I need to change to make the scrolling work normally?

  Thank you

  you need not use invalidate().  use:

  lc.horizontalScrollPolicy = ScrollPolicy.ON

  lc.maxHorizontalScrollPosition = 200;   Use an appropriate number

• SelectedItems value for List component

  I was able to put 1 items in a list, but not many. I've searched and searched and I can't find out how to do this.

  This code is taken to the right of the section of help for the List component documents in the List.selectedIndices section.  Add an instance to the stage and name it my_list and the code will do the rest.  In the code, a table is used to assign multiple selections, since it is implied the selectedIndices, an array property... my_list.selectedIndices = [0, 2];

  my_list.multipleSelection = true;

  my_list. AddItem ({data: "flash animation", label: "Flash"});
  my_list. AddItem ({data: "dreamweaver", label: "Dreamweaver"});
  my_list. AddItem ({data: "coldfusion", label:"ColdFusion"}); "})

  my_list.SelectedIndices = [0, 2];

  var numSelected:Number = my_list.selectedIndices.length;
  for (var i: Number = 0; i< numselected;="" i++)="">
  trace ("selectedIndices [" + i + "] =" + my_list.getItemAt(my_list.selectedIndices[i]).label);
  }

• ActionScript for List component

  I'm developing a glossary for a course of training, and I have my list component set up with all my terms.  Now, I need to program when the user clicks on a term, the definition appears.  I thought there was a way to do it, but my book does not in this detail.

  can anyone help?  Here's actionscripting I found online, but he says he can not work with Actionscript 3.

  Import fl.controls.List;
  Import fl.controls.TextArea;
  import flash.events.Event;
  Import fl.data.DataProvider;
  
  var glossary: List = new List();
  var Definition_Text:TextArea = new TextArea();
  var items: Array =]
  {label: "AbbrDial", data: "Dial allows an index number speed dial."},
  {label: "Response", data: "Allows you to answer a call."},
  {label: "Back", data: "Lets go back to the previous Help topic."},
  {label: "Barge", data: "Allows you to add yourself to a call on a party line."},
  {label: "Recall", data: "Allows you to be notified when a busy extension will be available."},
  ];
  Glossary.dataProvider = new DataProvider (items);
  
  addChild (Glossary);
  addChild (Definition_Text);
  
  Glossary.Move (150,150);
  Definition_Text.move (150, 260);
  
  Glossary.addEventListener (Event.CHANGE, changeHandler);
  
  function changeHandler(event:Event):void {}
  Definition_Text.text = event.target.selectedItem.data;
  };

  You don't need to build components, just them in the library.  The code does all the work for you.

  Open a new file, copy the code you posted to frame 1 of the scenario of this file... go into the component library and drag an instance of the List component to the stage and then delete it. go in the asset library, drag an instance of the TextArea component to the stage and then delete it..., run the file.

• Spark list component Icon property?

  in Flex 3.x the VBox property was property of the icon that you can use to set the images in the elements of the list as well as the label property. How can I get the same thing in a Flex 4 spark list component?

  I would like something like 'iconField' property set to the list item, so that my itemrenderer can be generic and not worry for a specific type of object is passed in.

  Thank you!

  ~ Mike

  I have the subclass would list, add an iconField property and change the default

  renderer a converter custom will check data [iconField] for a

  icon and display it.

• How to change the color of the text on the user interface control, such as the drop-down list component

  Hi, I want to change the color of the text in drop-down list because I want to set background color.

  How to do this?

  Thank you

  He suggests as a feature on jira. or write a custom, component drop-down list does not support this.

• Feed the list component with labels that have only certain values.

  I have to be able to sort out shorter labels in the component 'listHolder.list' by values in 'Fan', 'Herdighet', etc., which will be selected of the other items in the list
  (those who do not need to be fed by XML, but the list items own dataProvider)

  Practical example: displays only the labels in listHolder.list that are connected to the "H1" value in "Herdighet" or "H2" "Herdighet" etc.

  I am fairly new to AS3, so I do not know how to start. I appreciate everything you can give clues.

  Here's the code so far:

  //--------------------------

  var loader: URLLoader = new URLLoader();

  loader.addEventListener (Event.COMPLETE, onLoaded);

  listHolder.list. addEventListener (Event.CHANGE, itemChange);

  function itemChange(e:Event):void {}

  var selectedObj:Object = a [listHolder.listSelectedIndex]

  var xml;

  var a: Array = [];

  function onLoaded(e:Event):void {}

  XML = new XML (e.target.data);

  var it: XMLList = xml. Lauvtre;

  for (var i: uint = 0; i < il.length (); i ++) {}

  listHolder.list.addItem ({.child('Botanisk_navn').toString ()label: it [i]+ "\n"+ "-" + it [i].child('Norsk_navn').toString () "});

  a [i] = {'Fan': it [i].child('Farge').toString (), 'Herdighet': it [i].child('Herdighet').toString (),}

  "Høyde": he [i].child('hoyde').tostring (), "Botanisk_navn": he [i] .one ('Botanisk_n avn') m:System.NET.SocketAddress.ToString (),.

  'Norsk_navn': it [i].child('Norsk_navn').toString (), 'Image': it [i] .child ('image'). toString(),

  {"Blomstring": he [i].child('Blomstring').toString (), "Lysforhold": he [i] .one ('Lily book') m:System.NET.SocketAddress.ToString ()};

  }

  }

  Loader.Load (new URLRequest ("lauvtre.xml"));

  Fusion is a good thing.  The more you have to understand this, easy it all comes together when the lights start to go.

  In regard to the 'a' table... If you look at how values are it is attributed originally, they are attributed to the 'i' value of the index.  So, if the first element that passes the test of H1/H2 is the 10th 'i', it means that 10 of the table value is assigned to the first value you found.  The first 9 values in the table are zero as a result.

  But if you use the method push of the array class.

  a.push ({"Fan": he [i].child('Farge').toString (),... etc...});

  then the item is added to the index of the table rather than the 'i' the next clue.  If a table will have the same number of elements as the list and the list and table will agree in regard to pair them up.

• Expandable list component?

  Hi people, I've been looking through the Flash components integrated and noticed that there doesn't seem to be one who would help me to create a 'expandable list. I'm not sure if this is the correct term for what I want, so I'll give you a quick description of 100%:

  I want to be able to provide a list of people that allows them to click on an element to develop more options below, and be able to choose one of these more specific options. Ideally 'extensible elements' would be identified by a small symbol '+' next to them. for example

  - + Expandable Item 1

  - + Point stretch 2

  - + Point stretch 3

  - + Point stretch 4

  If I clicked on '+ point stretch 2' I would get:

  . + Extensible point 1

  . -Repeating point 2

  ..... Topic under 2.1

  ..... 2.2 the Sub

  ..... Point under 2.3

  . + Extensible point 3

  . + Expandable 4

  Is there anything I can use to create something like this easily? I did a search on google and I didn't come through anything, but as I said I don't know I'm looking for the correct term. Any help would be appreciated

  I don't know that there is any component readily available to tyou that you wouldn't buy from one who has done such a thing.  Chances are it is something you will have to develop yourself.  You should be able to model it from a menu drop-down stretch.  So if you are looking for using terms such as "Tutorial menu dropdown AS3" Google or "AS3 multi-level menu tutorial" or "tutorial menu accordion AS3 ' you might be able to find something that will point you in the direction you're heading.

• List component and external txt file.

  Hello
  
  Is there a way to load the labels of items in a list from a file component external .txt?
  
  Thank you

  You can try this...

• QML: To access variables defined outside of a list item to in a list component

  Consider the following QML:

  import bb.cascades 1.0

  
  

  {Page}
  content: {container
    {Label
    ID: topLabel
        text: «One»
        textStyle.size: 100.0
        textStyle.color: Color.Blue
    }

      Button {}
        text: 'change two.
        onClicked: {}
        topLabel.text = "Two"
      }
      }

  
  

      {To ListView
        objectName: "testList".

        listItemComponents:]
        {ListItemComponent}
          type:
          Button {}
            text: "change to three.
            onClicked: {}
              topLabel.text = "Three"
            }
          }
        }
      ]

  maxHeight: 300.0
  }
  }
  }

  The pages defines three controls: a label, a button, and a listview. In turn, each listview item also contains a button.

  By clicking on the button below the label successfully changes the text of the label through this code:

  onClicked: {}
  topLabel.text = "Two"
  }

  However, the execution of a similar code from the button in the listview control fails with this error:

  Test.QML:28: ReferenceError: can't find variable: topLabel

  Apparently, the variables defined outside the listview are not directly visible since in listview items.

  Y at - it available to access syntax?

  Thank you

  Jamie

  OK, we have identified a work around that should solve your problem, as suspected, she was reported linked so a redefinition is necessary.

  At the high level of the Page of the page, add the following line so that the label is accessible.

  {Page}
  ID: topPage
      
  onCreationCompleted: {Qt.topLabel = topLabel ;}
          
  Then, in the button definition, you can reference the Qt.topLabel in the list.

  listItemComponents:]
  {ListItemComponent}
  type: 'point '.
  Button {}
  text: "change to three.
  onClicked: {}
  Qt.topLabel.text = "Three";
  }
  }
  }
  ]

  Hope that solves your problem. Of course, it worked on my system.

  Graham

• List component transparency?

  How to make background transparent list something? I already tried setStyle and contentBackgroundAlpha, but none of them work.

  Is there another way?

  stage.addChild (specialList); specialList is manually placed on the stage

  var s:List = specialList; If I can get code hinting

  var al: Number = 0; for the object arg1 in setStyle

  s.setStyle ('contentBackgroundAlpha', al); sets the style

  I found another way.

  By editing the skins of the object I put it the right background color.

  However, if there is another way, I would like to know about it!

• txt file list component

  import flash.events.MouseEvent;
  import flash.net.FileReference;
  import flash.display.MovieClip;
   var arr:Array = new Array(square_mc,circle_mc,rect_mc);
  var file:FileReference = new FileReference();
  
  square_mc.visible = false;
  circle_mc.visible = false;
  rect_mc.visible = false;
  
  function ex():void
  {
   for (var i:uint = 0; i < arr.length; i++)
   {
    // Here We are creating four eventlisteners with a function  dispNm
    square_btn.addEventListener(MouseEvent.CLICK,dispNm);
    circle_btn.addEventListener(MouseEvent.CLICK,dispNm1);
    rect_btn.addEventListener(MouseEvent.CLICK, dispNm2);  
   }
  }
  ex();
  function dispNm(e:MouseEvent):void
  {
      trace(e.target.name);
   list.addItem({label:"Square"});
   square_mc.visible = true;
   circle_mc.visible = false;
   rect_mc.visible = false;
  }
  function dispNm1(e:MouseEvent):void
  {
      trace(e.target.name);
   list.addItem({label:"Circle"});
   square_mc.visible = false;
   circle_mc.visible = true;
   rect_mc.visible = false;
  }
  function dispNm2(e:MouseEvent):void
  {
      trace(e.target.name);
   list.addItem({label:"Rectangle"});
   square_mc.visible = false;
   circle_mc.visible = false;
   rect_mc.visible = true;
   
  }
  save.addEventListener(MouseEvent.CLICK, saved)
  function saved(event:MouseEvent):void
  {
   var file:FileReference = new FileReference();
      file.save(list.label.name, "example.txt");
  }
  

  I have this code.

  I want the visible movieclips on stage to add in the .txt file when save button is clicked.

  not all moviclips only vsisble ones. Too, I want that this should be automatically saved to the server.

  What should do? No idea please.

  Help, please.

  Thanks in advance.

  URLVariables (or another object) is bound to affect your urlrequest data property and is used in the code that I showed to send data to your ASP If your asp search file POST variable/value pairs ' ed and writes the values to a text file, then everything should work.

  in the code that I have proposed, I sent you the variables, the visible_mc0, the visible_mc1... etc with values = visible movieclips names listed in the arr.  you copied the code I posted.  I subsequently modified this code a few minutes later to use your table arr.

  Here's the code without the superfluous lines:

  submit.addEventListener(MouseEvent.CLICK, sendData);
function sendData(event:MouseEvent):void
{
//use a local path
   var urlreq:URLRequest = new URLRequest ("/file.asp");
  urlreq.method = URLRequestMethod.POST;
  var urlvars:URLVariables = new URLVariables();
var visableNum:int=0;
for(var i:int=0;i if(arr[i].visible){
urlvars["visible_mc"+visableNum++]=arr[i].name;  // <- this is where i use your urlvariables to assign variables/values
}
}
  urlreq.data = urlvars;   //<- data property assign to your urlrequest
  var loader:URLLoader = new URLLoader (urlreq);
  loader.addEventListener(Event.COMPLETE, completed);
  loader.dataFormat = URLLoaderDataFormat.VARIABLES;
  loader.load(urlreq);
}
function completed (event:Event):void
{
  resptxt.text = event.target.data;
}

• How to make a default selection in a List component?

  Hello!

  I need that when the list is displayed shows a cell selected, I tried this but didn t worked:

  list.isItemSelected (0) = true;

  You only need to assign to the selectedIndex property, as in...

  list.selectedIndex = 0;

• Count the lines in a list component

  Hello

  How can I count the rows with a value in a list item?

  I thought it would be RowCount but as I understood that shows the number of specified rows, not the number of rows with a value.

  Hello

  Try list.dataProvider.length