java,html,string,swing , How to highlight all the occurrence of a particular string in a web page?


How to highlight all the occurrence of a particular string in a web page?

Question:

Tag: java,html,string,swing

I am writing a swing application. In this application there is a table with some HTTP links. When I click a row a new browser window opens. To this point everything works good.

Now I would like to know if it is possible to have all the occurrences of a particular string highlighted (when the new page opens). In practice, how can I implement programmatically something similar to the "find" and "highlight all".

Can you please give me just a starting point, so I can start working on this new feature?


Answer:

To solve my issue,

  1. I first added to my swing app a class that implements a swing browser. I just copied the code from Oracle: http://docs.oracle.com/javafx/2/swing/SimpleSwingBrowser.java.htm

  2. Then I put a call for this class into a listener:

    .addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            String urlto = jTextField8.getText();
            String o = (String)jTable2.getModel().getValueAt(selectedRow, 1);
            String urltoencode = (urlto+"?find="+o); 
            SimpleSwingBrowser browser = new SimpleSwingBrowser(); 
            browser.setVisible(true);
            browser.loadURL(urltoencode);
    
  3. In the end, I modified the Swing Browser Class; I just added some java script to be executed on the new page opened by the embedded browser:

    engine.getLoadWorker().stateProperty().addListener(
            new ChangeListener<State>() {
            @Override
            public void changed(ObservableValue ov, State oldState, State newState) {
                if (newState == State.SUCCEEDED) {
                    engine.executeScript(
       "var myParam = location.search.split('find=')[1];"
     + "doSearch(myParam);function doSearch(text) {\n" +
       "        if (window.find && window.getSelection) {\n" +
       "        document.designMode = \"on\";\n" +
       "        var sel = window.getSelection();\n" +
       "        sel.collapse(document.body, 0);\n" +
       "\n" +
       "        while (window.find(text)) {\n" +
       "            document.execCommand(\"HiliteColor\", false, \"yellow\");\n" +
       "            sel.collapseToEnd();\n" +
       "        }\n" +
       "        document.designMode = \"off\";\n" +
       "    } else if (document.body.createTextRange) {\n" +
       "        var textRange = document.body.createTextRange();\n" +
       "        while (textRange.findText(text)) {\n" +
       "            textRange.execCommand(\"BackColor\", false, \"yellow\");\n" +
       "            textRange.collapse(false);\n" +
       "        }\n" +
       "    }\n" +
       "}");
                }
            }
        });
    

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