Thanks a lot! I had missed the join() extension, sorry! I'll obviously find some way from your indications.
Alain Pierrot Le 5 sept. 05 ? 10:51, Hussein Shafie a ?crit : > First of all, we already have a join() XPath function. See > http://www.xmlmind.com/xmleditor/_distrib/doc/commands/ch07s01.html > > Alain Pierrot wrote: > >> I am trying to build an user-friendly way of populating IDREFS >> attributes which would: >> 1) select through an XPath function the relevant targets (subset >> of ids >> to avoid scrolling the full list); >> 2) display in a pop-up relevant information to allow the choice, i.e. >> (calculated) content of elements rather than ids; >> 3) allow multiple selection. >> >> "set-attribute-button" (http://www.xmlmind.com/xmleditor/_distrib/ >> doc/ >> csssupport/ch05s29.html) is restricted to the whole list of ids and >> doesn't allow multiple selection (which makes it awkward to use with >> IDREFS) >> ? Is there a workaround there ? >> ? Could multiple selection ability for set-attribute-button be >> added to >> the wish-list ? >> > > This could be implemented using a command-button > http://www.xmlmind.com/xmleditor/_distrib/doc/csssupport/ch05s06.html > invoking a macro-command. > > The macro-command would: > [1] Collect IDs using XPath-based "get" construct. > http://www.xmlmind.com/xmleditor/_distrib/doc/commands/ch04.html > > [2] Use command "pick" to let the user select IDs. > http://www.xmlmind.com/xmleditor/_distrib/doc/commands/ch06s40.html > > [3] set the IDREFS attribute using command "putAttribute". > http://www.xmlmind.com/xmleditor/_distrib/doc/commands/ch06s42.html > > The only problen is that command "pick" does not support multiple > selections. You'll need to write an enhanced command "pick" yourself. > This is trivial (the source code of command "pick" is attached). > > > > >> "list" (http://www.xmlmind.com/xmleditor/_distrib/doc/csssupport/ >> ch05s24.html) seems the best way to achieve what I wish but I can't >> find a way to build labels and values with the actual coverage of >> XPath >> 1.0. >> ? Any idea to convert a node set into the \A separated strings "list" >> manages ? >> > > I've tested something like this and it works fine: > > --- > foo { > content: list(attribute, bar, > values, xpath("join(//@id, '\A ')"), > selection, multiple, > separator, " "); > } > --- > > The only problem is: how do you refresh the content of the list as the > author adds more IDs to the document? > > The above approach, command-button+macro-command, is much better IMHO. > > > > > >> XPath 2.0 seems to offer a whole lot of facilities to enhance the >> already very convenient support XXE provides (the "if" feature is >> really an useful extension:-)). >> ? Do you consider covering more features of XPath 2.0 in future >> releases? >> function "for $x in" would be useful together with "string- join" >> (http://www.w3.org/TR/xquery-operators/#func-string-join)... >> > > We'll probably add more XPath extension functions in the future. These > extension functions will be as close to their XPath 2.0 counterpart as > possible. > > We do not intend to support full XPath 2.0 in the near future. > XPath 1.0 > seems to be sufficient for 99% of our needs. > > --- > PS: To my knowledge, "for $x in" is XQuery, not XPath 2.0. > > ---------------------------------------------------------------------- > ----------------- > Wanadoo vous informe que cet e-mail a ete controle par l'anti- > virus mail. > Aucun virus connu a ce jour par nos services n'a ete detecte. > > /* > * Copyright (c) 2002-2005 Pixware. > * > * Author: Hussein Shafie > * > * This file is part of the XMLmind XML Editor project. > * For conditions of distribution and use, see the accompanying > legal.txt file. > */ > package com.xmlmind.xmleditapp.command; > > import java.io.IOException; > import java.io.InputStreamReader; > import java.io.LineNumberReader; > import java.io.File; > import java.net.MalformedURLException; > import java.net.URL; > import java.net.URLConnection; > import java.util.ArrayList; > import java.awt.Component; > import com.xmlmind.xmledit.util.MiscUtil; > import com.xmlmind.xmledit.util.StringUtil; > import com.xmlmind.xmledit.util.FileUtil; > import com.xmlmind.xmledit.guiutil.Alert; > import com.xmlmind.xmledit.guiutil.LabeledValue; > import com.xmlmind.xmledit.guiutil.ItemChooserDialog; > import com.xmlmind.xmledit.gadget.Gadget; > import com.xmlmind.xmledit.view.DocumentView; > import com.xmlmind.xmledit.command.RecordableCommand; > > public class Pick extends RecordableCommand { > private String[] args = null; > > public boolean prepareCommand(Gadget gadget, > String parameter, int x, int y) { > args = null; > > DocumentView docView = (DocumentView) gadget; > if (docView.getDocument() == null) > return false; > > if (parameter == null) > return false; > > args = StringUtil.splitArguments(parameter); > return (args.length >= 3); > } > > protected Object doExecuteCommand(DocumentView docView, > String parameter, int x, int > y) { > Component parentComponent = docView.getPanel(); > > String title = args[0]; > boolean labelValuePairs = "true".equals(args[1]); > > String[] strings = args; > int offset = 2; > int count = args.length - 2; > > if (count == 3 && "@".equals(args[2])) { > String[] content; > try { > content = loadFile(args[3], args[4]); > } catch (IOException e) { > Alert.showError(parentComponent, > Msg.msg("PICK.cannotLoadFile", > args[3], MiscUtil.reason(e))); > return EXECUTION_FAILED; > } > > strings = content; > offset = 0; > count = content.length; > } > > LabeledValue[] items; > int widest = 0; > if (labelValuePairs) { > items = new LabeledValue[count/2]; > > int j = 0; > count = offset + 2*(count/2); > for (int i = offset; i < count; i += 2) { > String label = strings[i]; > > int length = label.length(); > if (length > widest) > widest = length; > > items[j++] = new LabeledValue(label, strings[i+1]); > } > } else { > items = new LabeledValue[count]; > > int j = 0; > count = offset + count; > for (int i = offset; i < count; ++i) { > String value = strings[i]; > > int length = value.length(); > if (length > widest) > widest = length; > > items[j++] = new LabeledValue(value); > } > } > > int rows = items.length; > if (rows < 10) > rows = 10; > else if (rows > 30) > rows = 30; > > int columns = widest; > if (columns < 10) > columns = 10; > else if (columns > 60) > columns = 60; > > ItemChooserDialog chooser = > new ItemChooserDialog(parentComponent, title, rows, > columns); > chooser.setSingleClick(true); > > LabeledValue chosen = (LabeledValue) chooser.chooseItem > (items); > return (chosen == null)? EXECUTION_FAILED : chosen.value; > } > > private static final String[] loadFile(String fileName, String > encoding) > throws IOException { > if ("default".equals(encoding)) > encoding = FileUtil.defaultEncoding(); > > URL url = null; > try { > url = new URL(fileName); > } catch (MalformedURLException ignored) {} > > if (url == null) { > File file = new File(fileName); > if (file.isFile()) > url = FileUtil.fileToURL(file); > } > > if (url == null) > throw new IOException(Msg.msg("PICK.notAFileName", > fileName)); > > return doLoadFile(url, encoding); > } > > private static final String[] doLoadFile(URL url, > String encoding) > throws IOException { > URLConnection connection = url.openConnection(); > connection.setUseCaches(false); > connection.setIfModifiedSince(0); > > LineNumberReader in = new LineNumberReader( > new InputStreamReader(connection.getInputStream(), > encoding)); > > ArrayList list = new ArrayList(); > String line; > > try { > while ((line = in.readLine()) != null) { > if (line.length() > 0) > list.add(line); > } > } finally { > in.close(); > } > > String[] lines = new String[list.size()]; > list.toArray(lines); > return lines; > } > } > > -- > XMLmind XML Editor Support List > xmleditor-support at xmlmind.com > http://www.xmlmind.com/mailman/listinfo/xmleditor-support
