{"id":466,"date":"2009-08-27T15:29:26","date_gmt":"2009-08-27T18:29:26","guid":{"rendered":"https:\/\/devkico.itexto.com.br\/?p=466"},"modified":"2009-08-27T15:29:26","modified_gmt":"2009-08-27T18:29:26","slug":"jeditpane-como-descobrir-a-posicao-do-cursor","status":"publish","type":"post","link":"https:\/\/devkico.itexto.com.br\/?p=466","title":{"rendered":"JEditPane: como descobrir a posi\u00e7\u00e3o do cursor?"},"content":{"rendered":"<p>Recentemente me deparei com o seguinte problema: ao desenvolver uma DSL usando Groovy, me vi na necessidade de verificar em qual linha do meu c\u00f3digo erros eram encontrados ao serem executados pelo interpretador.<\/p>\n<p>O script em quest\u00e3o era digitado em um componente do tipo JEditorPane. Em um primeiro pensei: &#8220;moleza!&#8221;, no entanto, n\u00e3o h\u00e1 um m\u00e9todo pronto para que voc\u00ea obtenha o n\u00famero da linha aonde o seu cursor se encontra (!!!). Caso voc\u00ea se depare com este problema, o snippet abaixo lhe salvar\u00e1 algum tempo de pesquisa na internet:<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\n\r\n\/\/txtScript consiste na minha inst\u00e2ncia de javax.swing.JEditorPane\r\ntxtScript.addCaretListener(\r\n\r\n\/*\r\n\r\nNeste caso, criei uma nova inst\u00e2ncia de CaretListener para que um componente do tipo JLabel seja atualizado sempre que o usu\u00e1rio movimentar o cursor dentro do componente\r\n\r\n*\/\r\n\r\nnew CaretListener() {\r\n\r\npublic void caretUpdate(CaretEvent e) {\r\n\r\nint row = txtScript.getDocument().getRootElements()&#x5B;0].getElementIndex(txtScript.getCaretPosition());\r\n\r\nint coluna = txtScript.getCaretPosition() - txtScript.getDocument().getRootElements()&#x5B;0].getElement(row).getStartOffset();\r\n\r\nlblPosicaoCaractere.setText(&quot;Linha: &quot; + (row + 1) + &quot;, Coluna:&quot; + (coluna + 1));\r\n\r\n}\r\n\r\n}\r\n\r\n);\r\n\r\n<\/pre>\n<p>Tosco mas funciona :)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Recentemente me deparei com o seguinte problema: ao desenvolver uma DSL usando Groovy, me vi na necessidade de verificar em qual linha do meu c\u00f3digo erros eram encontrados ao serem executados pelo interpretador. O script em quest\u00e3o era digitado em um componente do tipo JEditorPane. Em um primeiro pensei: &#8220;moleza!&#8221;, no entanto, n\u00e3o h\u00e1 um [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6,43,37],"tags":[],"class_list":["post-466","post","type-post","status-publish","format-standard","hentry","category-java","category-snippet","category-swing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JEditPane: como descobrir a posi\u00e7\u00e3o do cursor? - \/dev\/Kico<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/devkico.itexto.com.br\/?p=466\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JEditPane: como descobrir a posi\u00e7\u00e3o do cursor? - \/dev\/Kico\" \/>\n<meta property=\"og:description\" content=\"Recentemente me deparei com o seguinte problema: ao desenvolver uma DSL usando Groovy, me vi na necessidade de verificar em qual linha do meu c\u00f3digo erros eram encontrados ao serem executados pelo interpretador. 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