/** * Perform the action of the plugin. * * @param document the current document. */ public boolean perform(Document document) throws IOException { // Interact with the user to get the layer tag/ Tag layerTag = getLayerTagFromUser(document); if (layerTag == null) return false; // User cancled. Tag endTag = new Tag(layerTag.getName(), false); // Get the output stream to hold the new document text. PrintWriter out = new PrintWriter(document.getOutput()); // Create a lexical stream to tokenize the old document text. LexicalStream in = new LexicalStream(new SelectedHTMLReader(document.getInput(), out)); for (; ; ) { // Get the next token of the document. Token token = in.next(); if (token == null) break; // Null means we've finished the document. else if (token instanceof Comment) { Comment comment = (Comment) token; if (comment.isSelectionStart()) { out.print(layerTag); } else if (comment.isSelectionEnd()) { out.print(comment); out.print(endTag); continue; // So comment isn't printed twice. } } out.print(token); } out.close(); return true; }
/** * Perform the action of the plugin. This plugin adds a "Netscape Now" button with a link to the * Netscape home page. * * @param document the current document. */ public boolean perform(Document document) throws IOException { // Create a print stream for the new document text. PrintWriter out = new PrintWriter(document.getOutput()); // Create a lexical stream to tokenize the old document text. LexicalStream in = new LexicalStream(new SelectedHTMLReader(document.getInput(), out)); // Keep track of whether or not we are in the selected text. // At the beginning of the document we're outside the selection. // After we encounter the start-selection comment, we're inside // the selection. // After we encounter the end-selection comment, we're outside // the selection again. boolean inSelection = false; Comment selectionStart = null; for (; ; ) { // Get the next token of the document. Token token = in.next(); if (token == null) break; // Null means we've finished the document. else if (token instanceof Comment) { Comment comment = (Comment) token; if (comment.isSelectionStart()) { selectionStart = comment; inSelection = true; continue; // Don't print the selection start yet. } else if (comment.isSelectionEnd()) { inSelection = false; out.print(selectionStart); insertButton(document, out); } else { // don't output this generic comment. continue; } } out.print(token); } out.close(); return true; }