java - Finding the source of an ActionEvent in a JButton[][] array without using nested loops? -


i've created jframe application 8x8 array of jbuttons[][] corresponding array of selected & deselected imageicons. when button pressed, selects button using setselection() , deselects other buttons. however, if button adjacent selected button pressed, selected button , adjacent button swap imageicons.

i've managed of this, using nested loops within actionevent determine adjacent buttons, selected button, , deselected buttons simultaneously becomes logical nightmare.

public void actionperformed(actionevent event) { (int row = 0; row < 8; row++) {   (int col = 0; col < 8; col++) {     if (event.getsource() == buttons[row][col]) {       if (row<7) buttonsadjacent[row+1][col] = true;       if (row>0) buttonsadjacent[row-1][col] = true;       if (col<7) buttonsadjacent[row][col+1] = true;       if (col>0) buttonsadjacent[row][col-1] = true;       buttons[row][col].setselected(true);       }     }   } }

how can put actionlisteners each adjacent button @ array index [row][col] determine if adjacent button has been pressed? , how can reassign actionlisteners every time new button has been selected?

as shown in complete example, can calculate index of jbutton in list<jbutton> function of row , column given grid size, e.g. n * n. see comments , edit history alternatives.

private static final int n = 5;  private jbutton getgridbutton(int r, int c) {     int index = r * n + c;     return list.get(index); }

Comments

Post a Comment

Popular posts from this blog

google app engine - 403 Forbidden POST - Flask WTForms -

i have flask application running on google app engine. trying submit form built using wtform , keep getting following error. 403 forbidden: don't have permission access requested resource. either read-protected or not readable server. location.html (part of code) <form method=post action="/home/location"> .... <button type="submit" class="btn btn-primary" value="submit"> directions </button> </form> main.py @app.route('/home/location', methods=['post', 'get']) def location(): form = cfcdirections.direction(request.form) print(request.method) if request.method == 'post' , form.validate(): print("after if") directions = cfcdirections() street_no = directions.no street = directions.street suburb = directions.suburb postcode = directions.postcode ...
Read more

Android layout hidden on keyboard show -

i have strange problem layout. when tap on edittext , keyboard shown edittext stay on bottom , when tap on to hide keyboard , keyboard hides , edittext go should when want input text. when tap again, keyboard shown , edittext goes down behind keyboard... <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <scrollview android:layout_width="match_parent" android:layout_height="fill_parent" android:above="@+id/rl_commands"> <textview android:layout_width="match_parent" android:layout_height="wrap_content"/> </scrollview> <relativelayout android:layout_width="match_parent android:layout_height="24dp" android:id="@+id/rl_commands" android:alignparentbottom="true"> ...
Read more

Parse xml element into list in Python -

i've been trying days store list of coordinates list in python. i've tried minidom, xmlreader, , few others. i'm doing wrong, i'm on deadline , need help. <?xml version="1.0" encoding="utf-8"?> <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/atom"> <document> <name>kmlfile</name> <style id="s_ylw-pushpin_hl"> <iconstyle> <scale>1.3</scale> <icon> <href>http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png</href> </icon> <hotspot x="20" y="2" xunits="pixels" yunits="pixels"/> </iconstyle> </style> <stylemap id="m_ylw-pushpin"> ...
Read more