From 80e98c5b715f7f239d67dc8d96f4db311c5c0fd3 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Sat, 5 Jan 2008 16:56:30 +0000
Subject: [PATCH] Implement checks for available modules both in BufferParams
 and in the gui.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@22387 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/BufferParams.cpp              |  7 +++++++
 src/frontends/qt4/GuiDocument.cpp | 24 +++++++++++++++++++-----
 src/frontends/qt4/GuiDocument.h   |  2 ++
 3 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/BufferParams.cpp b/src/BufferParams.cpp
index 11145b8189..dc2823911d 100644
--- a/src/BufferParams.cpp
+++ b/src/BufferParams.cpp
@@ -1413,6 +1413,13 @@ void BufferParams::makeTextClass()
 					endl;
 			continue;
 		}
+		if (!lm->isAvailable()) {
+			docstring const msg =
+						bformat(_("The module %1$s requires a package that is\n"
+						"not available in your LaTeX installation. LaTeX output\n"
+						"may not be possible.\n"), from_utf8(modName));
+			frontend::Alert::warning(_("Package not available"), msg);
+		}
 		FileName layout_file = libFileSearch("layouts", lm->filename);
 		textClass_->read(layout_file, TextClass::MODULE);
 	}
diff --git a/src/frontends/qt4/GuiDocument.cpp b/src/frontends/qt4/GuiDocument.cpp
index d884e9b9f6..7063e9e0e2 100644
--- a/src/frontends/qt4/GuiDocument.cpp
+++ b/src/frontends/qt4/GuiDocument.cpp
@@ -951,8 +951,16 @@ void GuiDocument::updateModuleInfo()
 			}
 			pkgdesc += pkgList[i];
 		}
-		if (!pkgdesc.empty())
-			desc += " Requires " + pkgdesc + ".";
+		if (!pkgdesc.empty()) {
+			if (!desc.empty())
+				desc += " ";
+			desc += ("Requires " + pkgdesc + ".");
+		}
+		if (!isModuleAvailable(modName)) {
+			if (!desc.empty())
+				desc += "\n";
+			desc += "WARNING: Some packages are unavailable!";
+		}
 		latexModule->infoML->document()->setPlainText(toqstr(desc));
 	}
 }
@@ -1689,13 +1697,12 @@ string GuiDocument::getModuleDescription(string const & modName) const
 {
 	LyXModule const * const mod = moduleList[modName];
 	if (!mod)
-		return string("Module unavailable!");
+		return string("Module not found!");
 	return mod->description;
 }
 
 
-vector<string>
-GuiDocument::getPackageList(string const & modName) const
+vector<string> GuiDocument::getPackageList(string const & modName) const
 {
 	LyXModule const * const mod = moduleList[modName];
 	if (!mod)
@@ -1704,6 +1711,13 @@ GuiDocument::getPackageList(string const & modName) const
 }
 
 
+bool GuiDocument::isModuleAvailable(string const & modName) const
+{
+	LyXModule * mod = moduleList[modName];
+	return mod->isAvailable();
+}
+
+
 TextClass const & GuiDocument::textClass() const
 {
 	return textclasslist[bp_.getBaseClass()];
diff --git a/src/frontends/qt4/GuiDocument.h b/src/frontends/qt4/GuiDocument.h
index 5fb2e30828..90a93f8314 100644
--- a/src/frontends/qt4/GuiDocument.h
+++ b/src/frontends/qt4/GuiDocument.h
@@ -186,6 +186,8 @@ protected:
 	///
 	std::vector<std::string> getPackageList(std::string const & modName) const;
 	///
+	bool isModuleAvailable(std::string const & modName) const;
+	///
 	void setLanguage() const;
 	///
 	void saveAsDefault() const;
-- 
2.39.2