StartDrag using Generic method in Actionscript 3
Hi,
AS3:
How to get general id (or) name from xml loaded images. bcoz, i want to drag and drop that images in generic method. Now, i currently used the event.target.name for each one.
So, code length was too large. See my code below.
/*********loading images through xml********/
var bg_container_mc:MovieClip
var bg_bg_myXMLLoader:URLLoader = new URLLoader();
bg_bg_myXMLLoader.load(new URLRequest("xml/backgroundimages.xml"));
bg_bg_myXMLLoader.addEventListener(Event.COMPLETE, processXML_bg);
function processXML_bg(e:Event):void {
var bg_myXML:XML=new XML(e.target.data);
columns_bg=bg_myXML.@COLUMNS;
bg_my_x=bg_myXML.@XPOSITION;
bg_my_y=bg_myXML.@YPOSITION;
bg_my_thumb_width=bg_myXML.@WIDTH;
bg_my_thumb_height=bg_myXML.@HEIGHT;
bg_my_images=bg_myXML.IMAGE;
bg_my_total=bg_my_images.length();
bg_container_mc = new MovieClip();
bg_container_mc.x=bg_my_x;
bg_container_mc.y=bg_my_y;
ContentHead.addChild(bg_container_mc);
for (var i:Number = 0; i < bg_my_total; i++) {
var bg_thumb_url=bg_my_images[i].@THUMB;
var bg_thumb_loader = new Loader();
bg_thumb_loader.load(new URLRequest(bg_thumb_url));
bg_thumb_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, thumbLoaded_bg);
bg_thumb_loader.name="bg_load"+i;
bg_thumb_loader.addEventListener(MouseEvent.MOUSE_DOWN, bg_down)
bg_thumb_loader.x = (bg_my_thumb_width-18)*bg_x_counter;
bg_thumb_loader.y = (bg_my_thumb_height-45)*bg_y_counter;
if (bg_x_counter+1<columns_bg) {
bg_x_counter++;
} else {
bg_x_counter=0;
bg_y_counter++;
function thumbLoaded_bg(e:Event):void {
var my_thumb_bg:Loader=Loader(e.target.loader);
var sprite:Sprite = new Sprite();
var shape:Shape = new Shape();
shape.graphics.lineStyle(1, 0x0098FF);
shape.graphics.drawRect(e.target.loader.x-2, e.target.loader.y-2, e.target.loader.width+4, e.target.loader.height+4);
sprite.addChild(shape);
sprite.addChild(my_thumb_bg);
sprite.x=4;
bg_container_mc.addChild(sprite);
my_thumb_bg.contentLoaderInfo.removeEventListener(Event.COMPLETE, thumbLoaded_bg);
// get name for each image.
I want to change this code in generic method. do needful.
function bg_down(event:MouseEvent):void {
var bg_name:String=new String(event.currentTarget.name);
var bg_load:MovieClip=event.currentTarget as MovieClip;
if (event.currentTarget.name=="bg_load0") {
var alaska_mc:alaska_png=new alaska_png();
addChild(alaska_mc);
alaska_mc.x=stage.mouseX;
alaska_mc.y=stage.mouseY;
alaska_mc.name="alaska_duplicate"+alaska_inc;
alaska_inc++;
alaska_mc.startDrag(false);
alaska_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
alaska_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load1") {
var lake_mc:lake_png=new lake_png();
addChild(lake_mc);
lake_mc.x=lake_mc.mouseX;
lake_mc.y=lake_mc.mouseY;
lake_mc.name="lake_duplicate"+lake_inc;
lake_inc++;
lake_mc.startDrag(false);
lake_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load2") {
var mountn_mc:mountn_png=new mountn_png();
addChild(mountn_mc);
mountn_mc.x=mountn_mc.mouseX;
mountn_mc.y=mountn_mc.mouseY;
mountn_mc.name="mountn_duplicate"+mountn_inc;
mountn_inc++;
mountn_mc.startDrag(false);
mountn_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load3") {
var town_mc:town_png=new town_png();
addChild(town_mc);
town_mc.x=town_mc.mouseX;
town_mc.y=town_mc.mouseY;
town_mc.name="town_duplicate"+town_inc;
town_inc++;
town_mc.startDrag(false);
town_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load4") {
var water_mc:water_png=new water_png();
addChild(water_mc);
water_mc.x=water_mc.mouseX;
water_mc.y=water_mc.mouseY;
water_mc.name="water_duplicate"+water_inc;
water_inc++;
water_mc.startDrag(false);
water_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load5") {
var city_mc:city_png=new city_png();
addChild(city_mc);
city_mc.x=city_mc.mouseX;
city_mc.y=city_mc.mouseY;
city_mc.name="city_duplicate"+city_inc;
city_inc++;
city_mc.startDrag(false);
city_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load6") {
var citywide_mc:citywide_png=new citywide_png();
addChild(citywide_mc);
citywide_mc.x=citywide_mc.mouseX;
citywide_mc.y=citywide_mc.mouseY;
citywide_mc.name="citywide_duplicate"+citywide_inc;
citywide_inc++;
citywide_mc.startDrag(false);
citywide_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load7") {
var downtown_mc:downtown_png=new downtown_png();
addChild(downtown_mc);
downtown_mc.x=downtown_mc.mouseX;
downtown_mc.y=downtown_mc.mouseY;
downtown_mc.name="downtown_duplicate"+downtown_inc;
downtown_inc++;
downtown_mc.startDrag(false);
downtown_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load8") {
var powerlines_mc:powerlines_png=new powerlines_png();
addChild(powerlines_mc);
powerlines_mc.x=powerlines_mc.mouseX;
powerlines_mc.y=powerlines_mc.mouseY;
powerlines_mc.name="powerlines_duplicate"+powerlines_inc;
powerlines_inc++;
powerlines_mc.startDrag(false);
powerlines_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load9") {
var tropical_mc:tropical_png=new tropical_png();
addChild(tropical_mc);
tropical_mc.x=tropical_mc.mouseX;
tropical_mc.y=tropical_mc.mouseY;
tropical_mc.name="tropical_duplicate"+tropical_inc;
tropical_inc++;
tropical_mc.startDrag(false);
tropical_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
if (event.currentTarget.name=="bg_load10") {
var waters_mc:waters_png=new waters_png();
addChild(waters_mc);
waters_mc.x=waters_mc.mouseX;
waters_mc.y=waters_mc.mouseY;
waters_mc.name="waters_duplicate"+waterthumb_inc;
waterthumb_inc++;
waters_mc.startDrag(false);
waters_mc.addEventListener(MouseEvent.MOUSE_UP, stdrag);
Please suggest me if any one.
Regards,
Viji. S
Post AS3 questions in the AS3 forum, not the AS1/2 forum.
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... 4 moreAnother thing that puzzles me: Why no stub? When I saw that I turned on Stub Generation (I'm using Genady's RMI Eclipse Plug-in) but that caused a world of problems so I turned it back off.Just making them transient isn't the end of the solution, btw,
* ChangeSupport serializes any serializable listeners.
* If the listener is serializable but unknown to the codebase
* causes UnmarshalException so best make these transient.
protected transient PropertyChangeSupport pcs;
protected transient VetoableChangeSupport vcs;After de-serialization pcs and vcs are null and of course the listeners are gone. AbcDO class uses events internally so they need to be re-established. Here's what I did, though I can think of at least two other solutions.
// Normal constructor - not run during de-serialization
protected AbcDO ( ) {
this.pcs = new PropertyChangeSupport( this );
addPropertyChangeListener( this );
this.vcs = new VetoableChangeSupport( this );
addVetoableChangeListener( new AbcValidator() );
this.SubObj = new SubObj ();
this.SubObj .addPropertyChangeListener( this );
* Re-establish transients after de-serialization.
* Note how much this looks like the ctor.
* @return this ready to rock again
* @throws ObjectStreamException
private Object readResolve ( ) throws ObjectStreamException {
this.pcs = new PropertyChangeSupport( this );
addPropertyChangeListener( this );
this.vcs = new VetoableChangeSupport( this );
addVetoableChangeListener( new AbcValidator() );
if( this.SubObj != null ) // should be impossible - subObj is final
this.SubObj .addPropertyChangeListener( this );
return this;
} Note that readResolve() may not be appropriate for a non-final class (see Effective Java). Note also that subObj needs its PropertyChangeSupport re-established. -
Hi all,
i have a question related to generic method in a non-generic class.
the following code cannot be compiled. but I don't know why.
public class G
void print(Integer i)
System.out.println("Inte");
void print(String s)
System.out.println("String");
<T> void callprint(T t)
print(t);
public static void main(String args[])
G g = new G();
g.callprint(new Integer(5));
}Edited by: 812302 on Nov 16, 2010 6:58 PM
Edited by: 812302 on Nov 16, 2010 6:59 PMDid you bother to read the error message. I'm sure it says something about not finding the print method and nothing to do with Generics. BTW you use square brackets for code tags or before and after your code.
-
Hello All,
I'm confused about the following generic method signature . Compilation fails
public class Animal{}
public class Dog extends Animal{}
public <E super Dog> List<E> methodABC(List<E> list){
The compiler gives the following error
E cannot be resolved to a type
E cannot be resolved to a type
Syntax error on token "super", , expected
if i change the declaration of E to <E extends Dog>, no compiler error.
An early response will be highly appreciated. Thanks in advance.
Kind Regards.
Hasnain Javed Khan.you cannot use "super" on a type variable, only on wildcards
-
Suppose I have this simplified code to do dynamic mapping between specific classes. My question is: the addItem and getItem functions
are pretty similar however addItem compiles fine and getItem raises compilation error:
Type mismatch: cannot convert from Class<capture#5-of ? extends List<? extends Object>> to Class<P>
private Map<Class<? extends Object>,
Class<? extends List<? extends Object>>> map =
new HashMap<Class<? extends Object>,
Class<? extends List<? extends Object>>>();
public Test() {
getItem(Object.class);
public <T extends Object, P extends List<T>> void addItem(Class<T> clz, Class<P> list) {
map.put(clz, list);
public <T extends Object, P extends List<T>> Class<P> getItem(Class<T> clz) {
return map.get(clz);
}Sergey_M. wrote:
OK, thank you for the response. Then the actual question is how to achieve this functionality:
1)Store mapping between two referenced classes, for example, Class<? extends MyClass> and Class<? extends List<? extends MyClass>>.
I mean if we have class MyClass then pair will be (MyClass.class, MyList.class) where MyList implements List<MyClass>.The way you were doing it is fine.
2)Provide generic method to get second class by supplying the first one.You can do this fine, but the exact type of list will of course be unknown by the calling code (if it knew the type of list it needed, why bother calling getItem in the first place?).
Just change your method to:
public <T extends Object> Class<? extends List<?>> getItem(Class<T> clz) {
return map.get(clz);
}And by then even the T is not needed, just use:
public Class<? extends List<?>> getItem(Class<?> clz) {
return map.get(clz);
}I am fairly, but not fully sure that you never need <? extends Object>, as that is always just a more verbose way of saying <?>.
Maybe you are looking for
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