xml elements context

src/coders/xml.cpp

@@ -196,8 +196,13 @@ xmlelement Parser::parseOpenTag() {
         if (peek() == '=') {
             nextChar();
             skipWhitespace();
-            expect('"');
-            attrtext = parseString('"');
+            
+            char quote = peek();
+            if (quote != '\'' && quote != '"') {
+                throw error("string literal expected");
+            }
+            skip(1);
+            attrtext = parseString(quote);
         }
         node->set(attrname, attrtext);
     }

src/frontend/menu/menu.cpp

@@ -284,9 +284,7 @@ void create_404_page(Engine* engine) {
         auto menu = engine->getGUI()->getMenu();
 
     auto panel = menus::create_page(engine, "404", 400, 0.0f, 8);
-    panel->add(std::make_shared<Label>(
-        langs::get(L"Page does not exists", L"menu"))
-    );
+    panel->add(guiutil::create("<label context='menu'>@Page does not exists</label>"));
     panel->add(guiutil::backButton(menu));
 }
 

src/graphics/ui/gui_util.cpp

@@ -1,9 +1,11 @@
 #include "gui_util.h"
 #include "elements/controls.h"
 #include "elements/containers.h"
+#include "gui_xml.h"
 
 #include <glm/glm.hpp>
 
+#include "../../logic/scripting/scripting.h"
 #include "../../frontend/locale/langs.h"
 #include "../../delegates.h"
 
@@ -32,6 +34,12 @@ std::shared_ptr<Button> guiutil::gotoButton(
     });
 }
 
+std::shared_ptr<gui::UINode> guiutil::create(const std::string& source) {
+    scripting::Environment env(0);
+    UiXmlReader reader(env);
+    return reader.readXML("<string>", source);
+}
+
 void guiutil::alert(GUI* gui, const std::wstring& text, runnable on_hidden) {
     auto menu = gui->getMenu();
     auto panel = std::make_shared<Panel>(glm::vec2(500, 200), glm::vec4(8.0f), 8.0f);

src/graphics/ui/gui_util.h

@@ -21,6 +21,10 @@ namespace guiutil {
         std::shared_ptr<gui::PagesControl> menu
     );
 
+    /// @brief Create element from XML
+    /// @param source XML
+    std::shared_ptr<gui::UINode> create(const std::string& source);
+
     void alert(
         gui::GUI* gui, 
         const std::wstring& text, 

src/graphics/ui/gui_xml.cpp

@@ -146,22 +146,25 @@ static void _readPanel(UiXmlReader& reader, xml::xmlelement element, Panel& pane
     }
 }
 
-
-static std::wstring readAndProcessInnerText(xml::xmlelement element) {
+static std::wstring readAndProcessInnerText(xml::xmlelement element, const std::string& context) {
     std::wstring text = L"";
     if (element->size() == 1) {
         std::string source = element->sub(0)->attr("#").getText();
         util::trim(source);
         text = util::str2wstr_utf8(source); 
         if (text[0] == '@') {
-            text = langs::get(text.substr(1));
+            if (context.empty()) {
+                text = langs::get(text.substr(1));
+            } else {
+                text = langs::get(text.substr(1), util::str2wstr_utf8(context));
+            }
         }
     }
     return text;
 }
 
 static std::shared_ptr<UINode> readLabel(UiXmlReader& reader, xml::xmlelement element) {
-    std::wstring text = readAndProcessInnerText(element);
+    std::wstring text = readAndProcessInnerText(element, reader.getContext());
     auto label = std::make_shared<Label>(text);
     _readUINode(reader, element, *label);
     if (element->has("valign")) {
@@ -194,7 +197,7 @@ static std::shared_ptr<UINode> readPanel(UiXmlReader& reader, xml::xmlelement el
 }
 
 static std::shared_ptr<UINode> readButton(UiXmlReader& reader, xml::xmlelement element) {
-    std::wstring text = readAndProcessInnerText(element);
+    std::wstring text = readAndProcessInnerText(element, reader.getContext());
     auto button = std::make_shared<Button>(text, glm::vec4(0.0f), nullptr);
     _readPanel(reader, element, *button);
 
@@ -218,7 +221,7 @@ static std::shared_ptr<UINode> readButton(UiXmlReader& reader, xml::xmlelement e
 }
 
 static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, xml::xmlelement element) {
-    auto text = readAndProcessInnerText(element);
+    auto text = readAndProcessInnerText(element, reader.getContext());
     bool checked = element->attr("checked", "false").asBool();
     auto checkbox = std::make_shared<FullCheckBox>(text, glm::vec2(), checked);
     _readPanel(reader, element, *checkbox);
@@ -245,7 +248,7 @@ static std::shared_ptr<UINode> readCheckBox(UiXmlReader& reader, xml::xmlelement
 
 static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement element) {
     auto placeholder = util::str2wstr_utf8(element->attr("placeholder", "").getText());
-    auto text = readAndProcessInnerText(element);
+    auto text = readAndProcessInnerText(element, reader.getContext());
     auto textbox = std::make_shared<TextBox>(placeholder, glm::vec4(0.0f));
     _readPanel(reader, element, *textbox);
     textbox->setText(text);
@@ -330,6 +333,7 @@ static std::shared_ptr<UINode> readTrackBar(UiXmlReader& reader, xml::xmlelement
 }
 
 UiXmlReader::UiXmlReader(const scripting::Environment& env) : env(env) {
+    contextStack.push("");
     add("image", readImage);
     add("label", readLabel);
     add("panel", readPanel);
@@ -354,7 +358,6 @@ void UiXmlReader::addIgnore(const std::string& tag) {
 
 std::shared_ptr<UINode> UiXmlReader::readUINode(xml::xmlelement element) {
     const std::string& tag = element->getTag();
-
     auto found = readers.find(tag);
     if (found == readers.end()) {
         if (ignored.find(tag) != ignored.end()) {
@@ -362,7 +365,16 @@ std::shared_ptr<UINode> UiXmlReader::readUINode(xml::xmlelement element) {
         }
         throw std::runtime_error("unsupported element '"+tag+"'");
     }
-    return found->second(*this, element);
+
+    bool hascontext = element->has("context");
+    if (hascontext) {
+        contextStack.push(element->attr("context").getText());
+    }
+    auto node = found->second(*this, element);
+    if (hascontext) {
+        contextStack.pop();
+    }
+    return node;
 }
 
 std::shared_ptr<UINode> UiXmlReader::readXML(
@@ -383,6 +395,10 @@ std::shared_ptr<UINode> UiXmlReader::readXML(
     return readUINode(root);
 }
 
+const std::string& UiXmlReader::getContext() const {
+    return contextStack.top();
+}
+
 const std::string& UiXmlReader::getFilename() const {
     return filename;
 }

src/graphics/ui/gui_xml.h

@@ -2,6 +2,7 @@
 #define FRONTEND_GUI_GUI_XML_H_
 
 #include <memory>
+#include <stack>
 #include <unordered_set>
 #include <unordered_map>
 
@@ -20,6 +21,7 @@ namespace gui {
     class UiXmlReader {
         std::unordered_map<std::string, uinode_reader> readers;
         std::unordered_set<std::string> ignored;
+        std::stack<std::string> contextStack;
         std::string filename;
         const scripting::Environment& env;
     public:
@@ -53,6 +55,7 @@ namespace gui {
             xml::xmlelement root
         );
 
+        const std::string& getContext() const;
         const scripting::Environment& getEnvironment() const;
         const std::string& getFilename() const;
     };