Fix bug #7540. Patch based upon one added to bug report by Max Funk.

Basically, patch adds routine that calcuates relative paths to parent
rather than child directories.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_2_0_X@38917 a592a061-630c-0410-9148-cb99ea01b6c8

src/frontends/qt4/GuiBibtex.cpp

@@ -435,7 +435,7 @@ QString GuiBibtex::browseBib(QString const & in_name) const
 	QString const label1 = qt_("Documents|#o#O");
 	QString const dir1 = toqstr(lyxrc.document_path);
 	QStringList const filter(qt_("BibTeX Databases (*.bib)"));
-	return browseRelFile(in_name, bufferFilePath(),
+	return browseRelToParent(in_name, bufferFilePath(),
 		qt_("Select a BibTeX database to add"), filter, false, label1, dir1);
 }
 
@@ -445,7 +445,7 @@ QString GuiBibtex::browseBst(QString const & in_name) const
 	QString const label1 = qt_("Documents|#o#O");
 	QString const dir1 = toqstr(lyxrc.document_path);
 	QStringList const filter(qt_("BibTeX Styles (*.bst)"));
-	return browseRelFile(in_name, bufferFilePath(),
+	return browseRelToParent(in_name, bufferFilePath(),
 		qt_("Select a BibTeX style"), filter, false, label1, dir1);
 }
 

src/frontends/qt4/GuiCompare.cpp

@@ -158,11 +158,11 @@ QString GuiCompare::browse(QString const & in_name) const
 	QString filename;
 	if (lyxview().documentBufferView()) {
 		QString path = bufferFilePath();
-		filename = browseRelFile(in_name, path, title, filters, false, 
+		filename = browseRelToParent(in_name, path, title, filters, false,
 			qt_("Documents|#o#O"), toqstr(lyxrc.document_path));
 	} else {
 		QString path = toqstr(lyxrc.document_path);
-		QString rel_filename = browseRelFile(in_name, path, title, filters, false, 
+		QString rel_filename = browseRelToParent(in_name, path, title, filters, false,
 			qt_("Documents|#o#O"), toqstr(lyxrc.document_path));
 		filename = makeAbsPath(rel_filename, path);
 	}

src/frontends/qt4/GuiDocument.cpp

@@ -1781,7 +1781,7 @@ void GuiDocument::browseLayout()
 	QString const label1 = qt_("Layouts|#o#O");
 	QString const dir1 = toqstr(lyxrc.document_path);
 	QStringList const filter(qt_("LyX Layout (*.layout)"));
-	QString file = browseRelFile(QString(), bufferFilePath(),
+	QString file = browseRelToParent(QString(), bufferFilePath(),
 		qt_("Local layout file"), filter, false,
 		label1, dir1);
 
@@ -1837,7 +1837,7 @@ void GuiDocument::browseMaster()
 	QString const old = latexModule->childDocLE->text();
 	QString const docpath = toqstr(support::onlyPath(buffer().absFileName()));
 	QStringList const filter(qt_("LyX Files (*.lyx)"));
-	QString file = browseRelFile(old, docpath, title, filter, false,
+	QString file = browseRelToSub(old, docpath, title, filter, false,
 		qt_("Documents|#o#O"), toqstr(lyxrc.document_path));
 
 	if (!file.isEmpty())

src/frontends/qt4/GuiExternal.cpp

@@ -639,7 +639,7 @@ QString GuiExternal::browse(QString const & input,
 	QString const label1 = qt_("Documents|#o#O");
 	QString const dir1 = toqstr(lyxrc.document_path);
 
-	return browseRelFile(input, bufpath, title, filter, false, label1, dir1);
+	return browseRelToParent(input, bufpath, title, filter, false, label1, dir1);
 }
 
 

src/frontends/qt4/GuiGraphics.cpp

@@ -793,7 +793,7 @@ QString GuiGraphics::browse(QString const & in_name) const
 	if (!clip.isDirectory())
 		clipdir = addName(package().system_support().absFileName(), "clipart");
 
-	return browseRelFile(in_name, bufferFilePath(),
+	return browseRelToParent(in_name, bufferFilePath(),
 		title, fileFilters(QString()), false, 
 		qt_("Clipart|#C#c"), toqstr(clipdir),
 		qt_("Documents|#o#O"), toqstr(lyxrc.document_path));

src/frontends/qt4/GuiInclude.cpp

@@ -328,7 +328,7 @@ QString GuiInclude::browse(QString const & in_name, Type in_type) const
 
 	QString const docpath = toqstr(support::onlyPath(buffer().absFileName()));
 
-	return browseRelFile(in_name, docpath, title, filters, false, 
+	return browseRelToParent(in_name, docpath, title, filters, false,
 		qt_("Documents|#o#O"), toqstr(lyxrc.document_path));
 }
 

src/frontends/qt4/GuiPrefs.cpp

@@ -90,7 +90,7 @@ namespace frontend {
 /** Launch a file dialog and return the chosen file.
 	filename: a suggested filename.
 	title: the title of the dialog.
-	pattern: *.ps etc.
+	filters: *.ps etc.
 	dir1 = (name, dir), dir2 = (name, dir): extra buttons on the dialog.
 */
 QString browseFile(QString const & filename,
@@ -194,19 +194,18 @@ QString browseDir(QString const & pathname,
 } // namespace frontend
 
 
-QString browseRelFile(QString const & filename, QString const & refpath,
+QString browseRelToParent(QString const & filename, QString const & relpath,
 	QString const & title, QStringList const & filters, bool save,
 	QString const & label1, QString const & dir1,
 	QString const & label2, QString const & dir2)
 {
-	QString const fname = makeAbsPath(filename, refpath);
-
+	QString const fname = makeAbsPath(filename, relpath);
 
 	QString const outname =
 		frontend::browseFile(fname, title, filters, save, label1, dir1, label2, dir2);
 
 	QString const reloutname =
-		toqstr(makeRelPath(qstring_to_ucs4(outname), qstring_to_ucs4(refpath)));
+		toqstr(makeRelPath(qstring_to_ucs4(outname), qstring_to_ucs4(relpath)));
 
 	if (reloutname.startsWith("../"))
 		return outname;
@@ -215,6 +214,29 @@ QString browseRelFile(QString const & filename, QString const & refpath,
 }
 
 
+QString browseRelToSub(QString const & filename, QString const & relpath,
+	QString const & title, QStringList const & filters, bool save,
+	QString const & label1, QString const & dir1,
+	QString const & label2, QString const & dir2)
+{
+	QString const fname = makeAbsPath(filename, relpath);
+
+	QString const outname =
+		frontend::browseFile(fname, title, filters, save, label1, dir1, label2, dir2);
+
+	QString const reloutname =
+		toqstr(makeRelPath(qstring_to_ucs4(outname), qstring_to_ucs4(relpath)));
+
+	QString testname = reloutname;
+	testname.remove(QRegExp("^(\\.\\./)+"));
+	
+	if (testname.contains("/"))
+		return outname;
+	else
+		return reloutname;
+}
+
+
 
 /////////////////////////////////////////////////////////////////////
 //

src/frontends/qt4/GuiPrint.cpp

@@ -84,7 +84,7 @@ void GuiPrint::change_adaptor()
 void GuiPrint::browseClicked()
 {
 	QString file =
-		browseRelFile(QString(), bufferFilePath(), qt_("Print to file"),
+		browseRelToParent(QString(), bufferFilePath(), qt_("Print to file"),
 			     QStringList(qt_("PostScript files (*.ps)")), true);
 	if (!file.isEmpty()) {
 		fileED->setText(file);

src/frontends/qt4/qt_helpers.h

@@ -84,14 +84,29 @@ support::FileName libFileSearch(QString const & dir, QString const & name,
 support::FileName imageLibFileSearch(QString & dir, QString const & name,
 				     QString const & ext = QString());
 
-/** Wrapper around browseFile which tries to provide a filename
-	relative to relpath.  If the relative path is of the form "foo.txt"
-	or "bar/foo.txt", then it is returned as relative. OTOH, if it is
-	of the form "../baz/foo.txt", an absolute path is returned. This is
-	intended to be useful for insets which encapsulate files/
+/** Wrappers around browseFile which try to provide a filename
+	relative to relpath.
+
+\param title: title for dialog
+	
+\param filters: *.ps, etc
+
+\param save: whether to save dialog info (current path, etc) for next use.
+
+The \param labelN and \param dirN arguments provide for extra buttons 
+in the dialog (e.g., "Templates" and a path to that directory).
+
+The difference between the functions concerns when we think we have a 
+relative path. 
+
+In \c browseRelToParent, we return a relative path only if it IS NOT of 
+	the form "../../foo.txt".
+
+In \c browseRelToSub, we return a relative path only if it IS of the
+ form "../../foo.txt".
 */
-QString browseRelFile(QString const & filename,
-	QString const & refpath,
+QString browseRelToParent(QString const & filename,
+	QString const & relpath,
 	QString const & title,
 	QStringList const & filters,
 	bool save = false,
@@ -100,6 +115,15 @@ QString browseRelFile(QString const & filename,
 	QString const & label2 = QString(),
 	QString const & dir2 = QString());
 
+QString browseRelToSub(QString const & filename,
+	QString const & relpath,
+	QString const & title,
+	QStringList const & filters,
+	bool save = false,
+	QString const & label1 = QString(),
+	QString const & dir1 = QString(),
+	QString const & label2 = QString(),
+	QString const & dir2 = QString());
 
 /** Build filelists of all availabe bst/cls/sty-files. Done through
 *  kpsewhich and an external script, saved in *Files.lst.