Menu bar : Différence entre versions

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As for a “classical” <font color=#FF8C00 title="Grahical User Interface>GUI</font>, <font color=#556B2F>'''GENIUS'''</font> proposes to have a main bar menu with the [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenuBar.html GMenuBar] class (on the same principle as the swing <font color=#FF8C00>JMenuBar</font>).
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First, we will have to create a class that extends [{{PathCurrentJavaDoc}}/fr/cnes/genius/lowLevel/GPanel.html GPanel]
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<syntaxhighlight lang="java">
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class myPanel extends GPanel {
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  myPanel () {
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  }
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}
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</syntaxhighlight>
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In the constructor of this class, we will create the different items of the menu(s) using the [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenuItem.html GMenuItem] class.
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<syntaxhighlight lang="java">
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class myPanel extends GPanel {
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  private GMenuItem itemLoad ;
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  private GMenuItem itemSave;
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  private GMenuItem itemQuit;
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  private GMenuItem itemHelp;
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  myPanel () {
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    // We create menu items
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    itemLoad = new GMenuItem("Load");
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    itemSave = new GMenuItem("Save");
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    itemQuit = new GMenuItem("Quit");
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    itemHelp = new GMenuItem("?");
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  }
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}
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</syntaxhighlight>
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Then, we will create the different menu(s) present in the [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenuBar.html GMenuBar] using the [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenu.html GMenu] class and associate items to this menu(s) using the <font color=#4169E1>add()</font> method.
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 +
<syntaxhighlight lang="java">
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class myPanel extends GPanel {
 +
 
 +
  private GMenuItem itemLoad ;
 +
  private GMenuItem itemSave;
 +
  private GMenuItem itemQuit;
 +
  private GMenuItem itemHelp;
 +
 
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  private GMenu fileMenu;
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  private GMenu aboutMenu;
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  myPanel () {
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    // We create menu items
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    itemLoad = new GMenuItem("Load");
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    itemSave = new GMenuItem("Save");
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    itemQuit = new GMenuItem("Quit");
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    itemHelp = new GMenuItem("?");
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    // We create the “File” and the "About" menu containing the previous items
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    fileMenu= new GMenu("File");
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    aboutMenu= new GMenu("About");
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    // We link items to menus
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    fileMenu.add(itemLoad);
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    fileMenu.add(itemWrite);
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    fileMenu.add(itemQuit);
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    aboutMenu.add(itemHelp);
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  }
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}
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</syntaxhighlight>
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We will initialize the menubar using the [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenuBar.html GMenuBar] class, associate menu(s) to the menubar using the <font color=#4169E1>add()</font> method and create a <font color=#4169E1>getMenuBar()</font> method that will return it.
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 +
<syntaxhighlight lang="java">
 +
class myPanel extends GPanel {
 +
 
 +
  private GMenuItem itemLoad ;
 +
  private GMenuItem itemSave;
 +
  private GMenuItem itemQuit;
 +
  private GMenuItem itemHelp;
 +
 
 +
  private GMenu fileMenu;
 +
  private GMenu aboutMenu;
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  private GMenuBar bar;
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  myPanel () {
 +
 
 +
    // We create menu items
 +
    itemLoad = new GMenuItem("Load");
 +
    itemSave = new GMenuItem("Save");
 +
    itemQuit = new GMenuItem("Quit");
 +
    itemHelp = new GMenuItem("?");
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 +
    // We create the “File” and the "About" menu containing the previous items
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    fileMenu= new GMenu("File");
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    aboutMenu= new GMenu("About");
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    // We link items to menus
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    fileMenu.add(itemLoad);
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    fileMenu.add(itemWrite);
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    fileMenu.add(itemQuit);
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    aboutMenu.add(itemHelp);
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    // Menu Bar initialization
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    bar = new GMenuBar(this);
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    bar.add(fileMenu);
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    bar.add(aboutMenu);
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  }
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  public GMenuBar getBar() { return bar; }
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}
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</syntaxhighlight>
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The [{{PathCurrentJavaDoc}}/fr/cnes/genius/highLevel/GMenuBar.html GMenuBar] will be associated to the main frame as this:
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<syntaxhighlight lang="java">
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myPanel pan = new MyPanel();
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GFrame frame = new GFrame("Test GChoice", pan, pan.getBar());
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</syntaxhighlight>
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[[File:MenuBar.jpg]]
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At last, we will check the action on this menu bar using the [{{PathCurrentJavaDoc}}/fr/cnes/genius/main/GListener.html GListener] interface:
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<syntaxhighlight lang="java">
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public void after(GEvent e) throws Exception {
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  if (e.contains(itemQuit) ){
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    System.exit(0);
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  }
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}
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</syntaxhighlight>
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Note that since the V1.2 version, it is now possible to get several menu levels.
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<syntaxhighlight lang="java">
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level1Menu = new GMenu("level 1");
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itemLevel11 = new GMenuItem("level 1-1");
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itemLevel12 = new GMenuItem("level 1-2");
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level1Menu.add(itemLevel11);
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level1Menu.add(itemLevel12);
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// FileMenu initialization
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level0Menu = new GMenu("Level 0");
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level0Menu.add(level1Menu);
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</syntaxhighlight>
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[[File:MenuBarLevels.jpg]]
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Version actuelle en date du 10 juillet 2017 à 07:57

As for a “classical” GUI, GENIUS proposes to have a main bar menu with the GMenuBar class (on the same principle as the swing JMenuBar).

First, we will have to create a class that extends GPanel 

class myPanel extends GPanel {
 
  myPanel () {
  }
 
}

In the constructor of this class, we will create the different items of the menu(s) using the GMenuItem class. 

class myPanel extends GPanel {
 
  private GMenuItem itemLoad ;
  private GMenuItem itemSave;
  private GMenuItem itemQuit;
  private GMenuItem itemHelp;
 
  myPanel () {
 
    // We create menu items
    itemLoad = new GMenuItem("Load");
    itemSave = new GMenuItem("Save");
    itemQuit = new GMenuItem("Quit");
    itemHelp = new GMenuItem("?");
 
  }
 
}

Then, we will create the different menu(s) present in the GMenuBar using the GMenu class and associate items to this menu(s) using the add() method. 

class myPanel extends GPanel {
 
  private GMenuItem itemLoad ;
  private GMenuItem itemSave;
  private GMenuItem itemQuit;
  private GMenuItem itemHelp;
 
  private GMenu fileMenu;
  private GMenu aboutMenu;
 
  myPanel () {
 
    // We create menu items
    itemLoad = new GMenuItem("Load");
    itemSave = new GMenuItem("Save");
    itemQuit = new GMenuItem("Quit");
    itemHelp = new GMenuItem("?");
 
    // We create the “File” and the "About" menu containing the previous items
    fileMenu= new GMenu("File");
    aboutMenu= new GMenu("About");
 
    // We link items to menus
    fileMenu.add(itemLoad);
    fileMenu.add(itemWrite);
    fileMenu.add(itemQuit);
    aboutMenu.add(itemHelp);
 
  }
 
}

We will initialize the menubar using the GMenuBar class, associate menu(s) to the menubar using the add() method and create a getMenuBar() method that will return it. 

class myPanel extends GPanel {
 
  private GMenuItem itemLoad ;
  private GMenuItem itemSave;
  private GMenuItem itemQuit;
  private GMenuItem itemHelp;
 
  private GMenu fileMenu;
  private GMenu aboutMenu;
 
  private GMenuBar bar;
 
  myPanel () {
 
    // We create menu items
    itemLoad = new GMenuItem("Load");
    itemSave = new GMenuItem("Save");
    itemQuit = new GMenuItem("Quit");
    itemHelp = new GMenuItem("?");
 
    // We create the “File” and the "About" menu containing the previous items
    fileMenu= new GMenu("File");
    aboutMenu= new GMenu("About");
 
    // We link items to menus
    fileMenu.add(itemLoad);
    fileMenu.add(itemWrite);
    fileMenu.add(itemQuit);
    aboutMenu.add(itemHelp);
 
    // Menu Bar initialization
    bar = new GMenuBar(this);
    bar.add(fileMenu);
    bar.add(aboutMenu);
 
  }
 
  public GMenuBar getBar() { return bar; }
 
}

The GMenuBar will be associated to the main frame as this: 

myPanel pan = new MyPanel();
GFrame frame = new GFrame("Test GChoice", pan, pan.getBar());


MenuBar.jpg


At last, we will check the action on this menu bar using the GListener interface: 

public void after(GEvent e) throws Exception {
 
  if (e.contains(itemQuit) ){
    System.exit(0);
  }
 
}

Note that since the V1.2 version, it is now possible to get several menu levels. 

level1Menu = new GMenu("level 1");
itemLevel11 = new GMenuItem("level 1-1");
itemLevel12 = new GMenuItem("level 1-2");
level1Menu.add(itemLevel11);
level1Menu.add(itemLevel12);
 
// FileMenu initialization
level0Menu = new GMenu("Level 0");
level0Menu.add(level1Menu);


MenuBarLevels.jpg


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