Thread: selection end and start

I am using the following code but "end" and "start" is not exactly the "end" and "start" of the selected text in JeditorPane.

 
JEditorPane note = new JEditorPane();
int end;
int start; 
 
public void GetText() throws Exception{
 
		query = note.getSelectedText();
		end=note.getSelectionEnd();
		start=note.getSelectionStart();
 
	}

no answer?

What do you mean by 'not exactly'? If it is off by 1 you must remember that the selections are zero offset (eg getSelectionStart() from a text component whose selection starts at the beginning of the document would return 0)

no, it is more than just 1. what is the number that is returned by getSelectionStart() or getSelectionEnd? I mean, is it the X coordinate of selected text, is it its Y coordinate or anything else?

Originally Posted by nasi

no, it is more than just 1. what is the number that is returned by getSelectionStart() or getSelectionEnd? I mean, is it the X coordinate of selected text, is it its Y coordinate or anything else?

It is the start and end indexes of the selected text. eg consider the string "string", if 'str' is selected in the TextComponent, then getSelectionStart() should return 0. NOTE: if you are displaying an html string in the component, the numbers returned by these methods will not match up to the original string representation of the html String.

Thanks. yes I am working on html String. So what should I do if I want to open a frame exactly at the end of selected text? I know that I should use setBounds() Method, but I don't know how to set the position of the frame to the end of selected text.

helllooooooooooo, (think)

The selection start & end gives you the character position in the text, not a screen location. To get a screen location, use the modelToView(..) method, which will give you the location in the viewport. You can then use this to get the appropriate location relative to, e.g. the frame window or the screen (with SwingUtilities.convertRectangle(..), or the convertPoint(..) methods).

Originally Posted by nasi

@ dlorde, thanks ,I am using the following code but it doesn't convert the y coordinate from "splitPane" to " note". I mean that the Y coordinate is relative to "splitlPane" and not "note".

JEditorPane note = new JEditorPane();
JScrollPane paneScrollPane = new JScrollPane(note);
JSplitPane  splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
					upPane,
					paneScrollPane);
 
SwingUtilities.convertRectangle(splitlPane,note.modelToView(note.getSelectionEnd()),note);

Er, the first argument should be the source component and the last argument should be the destination component - the JSplitPane is not the editor pane view component - but why would you want to convert the view co-ordinates to the JEditorPane co-ordinates? For a visible location they're going to be pretty much the same. If you want to display a frame at that location, don't you need co-ordinates relative to component that will display the frame (e.g. the main frame), or perhaps the absolute screen co-ordinates?

Maybe I didn't understand quite what you're trying to do...

As it is shown in my code the main frame is devided to 2 parts horizentally and the JEditorPane is the lower part of JSplitPane. the coordinates that are generated by SwingUtilities.convertRectangle(...) are relative to the main frame(JSplitPane), I need them to be generated relative to JEditorPane. I highlight a word in JEditorPane and I need a new frame opens exactly at the end of the selected word but now the new frame is created upper than the selected word, and I think that the reason is that on the top of main frame is a panel which is not part of JEditorPane. meanwhile I changed the source component to main frame but no changes happened.