{"id":1209,"date":"2021-01-13T18:38:56","date_gmt":"2021-01-13T18:38:56","guid":{"rendered":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/?page_id=1209"},"modified":"2021-01-13T18:45:59","modified_gmt":"2021-01-13T18:45:59","slug":"writing-your-own-dialogs","status":"publish","type":"page","link":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/course-topics\/swing-gui-components\/dialog-boxes\/writing-your-own-dialogs\/","title":{"rendered":"Writing Your Own Dialogs"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a21c414d3df5\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a21c414d3df5\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/course-topics\/swing-gui-components\/dialog-boxes\/writing-your-own-dialogs\/#The_JDialog_Class\" >The JDialog Class<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/course-topics\/swing-gui-components\/dialog-boxes\/writing-your-own-dialogs\/#An_AboutDialog\" >An AboutDialog<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_JDialog_Class\"><\/span>The JDialog Class<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When you wish to write your own dialog, the first thing you have to do is make your class a subclass of&nbsp;<code><strong>JDialog<\/strong><\/code>.&nbsp;&nbsp;<code><strong>JDialog<\/strong><\/code>&nbsp;provides the basic functionality for dialogs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Note that the default layout manager for a&nbsp;<code><strong>JDialog<\/strong><\/code>&#8216;s content pane is&nbsp;<code><strong>BorderLayout<\/strong><\/code>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Note also, that a&nbsp;<code><strong>JDialog<\/strong><\/code>&nbsp;expects an &#8220;owner&#8221;, or parent, as one of its constructor arguments.&nbsp; Dialogs are not supposed to be standalone elements (although a null parent effectively makes the dialog&#8217;s parent be the desktop).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"An_AboutDialog\"><\/span>An AboutDialog<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s a simple&nbsp;<code><strong>AboutDialog<\/strong><\/code>&nbsp;class.&nbsp; It&#8217;s based on an earlier class we used to show how menu items work, and the&nbsp;<code><strong>AboutDialog<\/strong><\/code>&nbsp;is launched when the user clicks on the&nbsp;<code><strong>Help -&gt; About...<\/strong><\/code>&nbsp;menu item.<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: java; auto-links: false; highlight: [9,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,59,60,61,62,63,64,65,66,75,76,77,78,79]; title: ; quick-code: false; notranslate\" title=\"\">\npackage swingExamples;\n\nimport java.awt.Container;\nimport java.awt.FlowLayout;\n\nimport java.awt.event.ActionEvent;\nimport java.awt.event.ActionListener;\n\nimport javax.swing.JDialog;\nimport javax.swing.JFrame;\nimport javax.swing.JLabel;\nimport javax.swing.JMenu;\nimport javax.swing.JMenuBar;\nimport javax.swing.JMenuItem;\nimport javax.swing.SwingConstants;\n\nclass AboutDialog extends JDialog\n{\n  public AboutDialog(JFrame parent)\n  {\n    super(parent, &quot;AboutDialog&quot;);\n    \n    \/\/ Add components to the dialog&#039;s content pane\n    Container contentPane = getContentPane();\n    contentPane.setLayout(new FlowLayout());\n    JLabel label = new JLabel(\n              &quot;AboutDialogTest V1&quot;, SwingConstants.CENTER);\n    contentPane.add(label);\n    label = new JLabel(\n              &quot;by Bryan J. Higgs&quot;, SwingConstants.CENTER);\n    contentPane.add(label);\n    label = new JLabel(\n              &quot;October, 2001&quot;, SwingConstants.CENTER);\n    contentPane.add(label);\n    \n    setSize(150, 100);\n  }\n}\n\nclass AboutDialogFrame extends JFrame\n{\n  public AboutDialogFrame(String title)\n  {\n    setTitle(title);\n    setSize(300, 200);\n    setDefaultCloseOperation(EXIT_ON_CLOSE);\n    \n    \/\/ Create menu bar with menu\n    JMenu fileMenu = new JMenu(&quot;File&quot;);\n    fileMenu.add(&quot;New...&quot;);\n    fileMenu.add(&quot;Open...&quot;);\n    fileMenu.add(&quot;Save&quot;);\n    fileMenu.add(&quot;Save As...&quot;);\n    fileMenu.addSeparator();\n    fileMenu.add(&quot;Quit&quot;);\n    \n    JMenu helpMenu = new JMenu(&quot;Help&quot;);\n    JMenuItem aboutItem = new JMenuItem(&quot;About...&quot;);\n    aboutItem.addActionListener(new ActionListener()\n    {\n      public void actionPerformed(ActionEvent ev)\n      {\n        launchAboutDialog();\n      }\n    }\n    );\n    helpMenu.add(aboutItem);\n    \n    JMenuBar menuBar = new JMenuBar();\n    menuBar.add(fileMenu);\n    menuBar.add(helpMenu);\n    setJMenuBar(menuBar);\n  }\n  \n  private void launchAboutDialog()\n  {\n    AboutDialog dialog = new AboutDialog(this);\n    dialog.setVisible(true);\n  }\n}\n\npublic class AboutDialogExample\n{\n  public static void main(String&#x5B;] args)\n  {\n    AboutDialogFrame frame = \n          new AboutDialogFrame(&quot;AboutDialogTest&quot;);\n    frame.setVisible(true);\n  }\n}\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">Here is what results:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignleft size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-content\/uploads\/2021\/01\/AboutDialog.gif\" alt=\"\" class=\"wp-image-1213\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The JDialog Class When you wish to write your own dialog, the first thing you have to do is make your class a subclass of&nbsp;JDialog.&nbsp;&nbsp;JDialog&nbsp;provides the basic functionality for dialogs. Note that the default layout manager for a&nbsp;JDialog&#8216;s content pane is&nbsp;BorderLayout. Note also, that a&nbsp;JDialog&nbsp;expects an &#8220;owner&#8221;, or parent, as one of its constructor arguments.&nbsp; [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1152,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_eb_attr":"","_uag_custom_page_level_css":"","ocean_post_layout":"left-sidebar","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"ocs-course-topics-sidebar","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-1209","page","type-page","status-publish","hentry","entry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"ocean-thumb-m":false,"ocean-thumb-ml":false,"ocean-thumb-l":false},"uagb_author_info":{"display_name":"Bryan Higgs","author_link":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/author\/bryan\/"},"uagb_comment_info":0,"uagb_excerpt":"The JDialog Class When you wish to write your own dialog, the first thing you have to do is make your class a subclass of&nbsp;JDialog.&nbsp;&nbsp;JDialog&nbsp;provides the basic functionality for dialogs. Note that the default layout manager for a&nbsp;JDialog&#8216;s content pane is&nbsp;BorderLayout. Note also, that a&nbsp;JDialog&nbsp;expects an &#8220;owner&#8221;, or parent, as one of its constructor arguments.&nbsp;&hellip;","_links":{"self":[{"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/pages\/1209","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/comments?post=1209"}],"version-history":[{"count":5,"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/pages\/1209\/revisions"}],"predecessor-version":[{"id":1217,"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/pages\/1209\/revisions\/1217"}],"up":[{"embeddable":true,"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/pages\/1152"}],"wp:attachment":[{"href":"https:\/\/bhiggs.x10hosting.com\/PracticalJavaProgramming\/wp-json\/wp\/v2\/media?parent=1209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}