From 7be1c3f2237c5bb51a29aaba7b8df6fd4b8718c8 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Thu, 16 May 2024 13:02:20 +0300
Subject: [PATCH] textbox onup, ondown callbacks

---
 src/graphics/ui/elements/TextBox.cpp | 58 +++++++++++++++++++++-------
 src/graphics/ui/elements/TextBox.hpp | 12 ++++--
 src/graphics/ui/elements/UINode.cpp  | 12 ++----
 src/graphics/ui/elements/UINode.hpp  | 23 ++++++++++-
 src/graphics/ui/gui_xml.cpp          | 51 ++++++++++++++----------
 5 files changed, 107 insertions(+), 49 deletions(-)

diff --git a/src/graphics/ui/elements/TextBox.cpp b/src/graphics/ui/elements/TextBox.cpp
index cf32a1b8..fc42c369 100644
--- a/src/graphics/ui/elements/TextBox.cpp
+++ b/src/graphics/ui/elements/TextBox.cpp
@@ -12,9 +12,12 @@
 using namespace gui;
 
 TextBox::TextBox(std::wstring placeholder, glm::vec4 padding) 
-    : Panel(glm::vec2(200,32), padding, 0), 
-      input(L""),
-      placeholder(placeholder) {
+  : Panel(glm::vec2(200,32), padding, 0), 
+    input(L""),
+    placeholder(placeholder)
+{
+    setOnUpPressed(nullptr);
+    setOnDownPressed(nullptr);
     label = std::make_shared<Label>(L"");
     label->setSize(size-glm::vec2(padding.z+padding.x, padding.w+padding.y));
     add(label);
@@ -374,7 +377,8 @@ void TextBox::resetMaxLocalCaret() {
     maxLocalCaret = caret - label->getTextLineOffset(label->getLineByTextIndex(caret));
 }
 
-void TextBox::stepLeft(bool shiftPressed, bool breakSelection, uint previousCaret) {
+void TextBox::stepLeft(bool shiftPressed, bool breakSelection) {
+    uint previousCaret = this->caret;
     uint caret = breakSelection ? selectionStart : this->caret;
     if (caret > 0) {
         if (caret > input.length()) {
@@ -397,7 +401,8 @@ void TextBox::stepLeft(bool shiftPressed, bool breakSelection, uint previousCare
     resetMaxLocalCaret();
 }
 
-void TextBox::stepRight(bool shiftPressed, bool breakSelection, uint previousCaret) {
+void TextBox::stepRight(bool shiftPressed, bool breakSelection) {
+    uint previousCaret = this->caret;
     uint caret = breakSelection ? selectionEnd : this->caret;
     if (caret < input.length()) {
         setCaret(caret+1);
@@ -417,7 +422,8 @@ void TextBox::stepRight(bool shiftPressed, bool breakSelection, uint previousCar
     resetMaxLocalCaret();
 }
 
-void TextBox::stepDown(bool shiftPressed, bool breakSelection, uint previousCaret) {
+void TextBox::stepDefaultDown(bool shiftPressed, bool breakSelection) {
+    uint previousCaret = this->caret;
     uint caret = breakSelection ? selectionEnd : this->caret;
     uint caretLine = label->getLineByTextIndex(caret);
     if (caretLine < label->getLinesNumber()-1) {
@@ -436,7 +442,8 @@ void TextBox::stepDown(bool shiftPressed, bool breakSelection, uint previousCare
     }
 }
 
-void TextBox::stepUp(bool shiftPressed, bool breakSelection, uint previousCaret) {
+void TextBox::stepDefaultUp(bool shiftPressed, bool breakSelection) {
+    uint previousCaret = this->caret;
     uint caret = breakSelection ? selectionStart : this->caret;
     uint caretLine = label->getLineByTextIndex(caret);
     if (caretLine > 0) {
@@ -458,7 +465,6 @@ void TextBox::stepUp(bool shiftPressed, bool breakSelection, uint previousCaret)
 void TextBox::performEditingKeyboardEvents(keycode key) {
     bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
     bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
-    uint previousCaret = caret;
     if (key == keycode::BACKSPACE) {
         if (!eraseSelected() && caret > 0 && input.length() > 0) {
             if (caret > input.length()) {
@@ -485,13 +491,13 @@ void TextBox::performEditingKeyboardEvents(keycode key) {
     } else if (key == keycode::TAB) {
         paste(L"    ");
     } else if (key == keycode::LEFT) {
-        stepLeft(shiftPressed, breakSelection, previousCaret);
+        stepLeft(shiftPressed, breakSelection);
     } else if (key == keycode::RIGHT) {
-        stepRight(shiftPressed, breakSelection, previousCaret);
-    } else if (key == keycode::UP) {
-        stepUp(shiftPressed, breakSelection, previousCaret);
-    } else if (key == keycode::DOWN) {
-        stepDown(shiftPressed, breakSelection, previousCaret);
+        stepRight(shiftPressed, breakSelection);
+    } else if (key == keycode::UP && onUpPressed) {
+        onUpPressed();
+    } else if (key == keycode::DOWN && onDownPressed) {
+        onDownPressed();
     }
 }
 
@@ -545,6 +551,30 @@ std::shared_ptr<UINode> TextBox::getAt(glm::vec2 pos, std::shared_ptr<UINode> se
     return UINode::getAt(pos, self);
 }
 
+void TextBox::setOnUpPressed(runnable callback) {
+    if (callback == nullptr) {
+        onUpPressed = [this]() {
+            bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
+            bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
+            stepDefaultUp(shiftPressed, breakSelection);
+        };
+    } else {
+        onUpPressed = callback;
+    }
+}
+
+void TextBox::setOnDownPressed(runnable callback) {
+    if (callback == nullptr) {
+        onDownPressed = [this]() {
+            bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
+            bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
+            stepDefaultDown(shiftPressed, breakSelection);
+        };
+    } else {
+        onDownPressed = callback;
+    }
+}
+
 void TextBox::setTextSupplier(wstringsupplier supplier) {
     this->supplier = supplier;
 }
diff --git a/src/graphics/ui/elements/TextBox.hpp b/src/graphics/ui/elements/TextBox.hpp
index 8ca85bbc..c041702f 100644
--- a/src/graphics/ui/elements/TextBox.hpp
+++ b/src/graphics/ui/elements/TextBox.hpp
@@ -20,6 +20,8 @@ namespace gui {
         wstringconsumer consumer = nullptr;
         wstringchecker validator = nullptr;
         runnable onEditStart = nullptr;
+        runnable onUpPressed;
+        runnable onDownPressed;
         bool valid = true;
         /// @brief text input pointer, value may be greather than text length
         uint caret = 0;
@@ -39,10 +41,10 @@ namespace gui {
         bool editable = true;
         bool autoresize = false;
 
-        void stepLeft(bool shiftPressed, bool breakSelection, uint previousCaret);
-        void stepRight(bool shiftPressed, bool breakSelection, uint previousCaret);
-        void stepDown(bool shiftPressed, bool breakSelection, uint previousCaret);
-        void stepUp(bool shiftPressed, bool breakSelection, uint previousCaret);
+        void stepLeft(bool shiftPressed, bool breakSelection);
+        void stepRight(bool shiftPressed, bool breakSelection);
+        void stepDefaultDown(bool shiftPressed, bool breakSelection);
+        void stepDefaultUp(bool shiftPressed, bool breakSelection);
 
         size_t normalizeIndex(int index);
 
@@ -163,6 +165,8 @@ namespace gui {
         virtual void typed(unsigned int codepoint) override; 
         virtual void keyPressed(keycode key) override;
         virtual std::shared_ptr<UINode> getAt(glm::vec2 pos, std::shared_ptr<UINode> self) override;
+        virtual void setOnUpPressed(runnable callback);
+        virtual void setOnDownPressed(runnable callback);
     };
 }
 
diff --git a/src/graphics/ui/elements/UINode.cpp b/src/graphics/ui/elements/UINode.cpp
index eda24fff..de1ced1c 100644
--- a/src/graphics/ui/elements/UINode.cpp
+++ b/src/graphics/ui/elements/UINode.cpp
@@ -60,12 +60,12 @@ UINode* UINode::getParent() const {
 }
 
 UINode* UINode::listenAction(onaction action) {
-    actions.push_back(action);
+    actions.listen(action);
     return this;
 }
 
 UINode* UINode::listenDoubleClick(onaction action) {
-    doubleClickCallbacks.push_back(action);
+    doubleClickCallbacks.listen(action);
     return this;
 }
 
@@ -76,18 +76,14 @@ void UINode::click(GUI*, int, int) {
 void UINode::doubleClick(GUI* gui, int x, int y) {
     pressed = true;
     if (isInside(glm::vec2(x, y))) {
-        for (auto callback : doubleClickCallbacks) {
-            callback(gui);
-        }
+        doubleClickCallbacks.notify(gui);
     }
 }
 
 void UINode::mouseRelease(GUI* gui, int x, int y) {
     pressed = false;
     if (isInside(glm::vec2(x, y))) {
-        for (auto callback : actions) {
-            callback(gui);
-        }
+        actions.notify(gui);
     }
 }
 
diff --git a/src/graphics/ui/elements/UINode.hpp b/src/graphics/ui/elements/UINode.hpp
index 3f7ba24e..b4667acd 100644
--- a/src/graphics/ui/elements/UINode.hpp
+++ b/src/graphics/ui/elements/UINode.hpp
@@ -21,6 +21,25 @@ namespace gui {
 
     using onaction = std::function<void(GUI*)>;
     using onnumberchange = std::function<void(GUI*, double)>;
+
+    class ActionsSet {
+        std::unique_ptr<std::vector<onaction>> callbacks;
+    public:
+        void listen(onaction callback) {
+            if (callbacks == nullptr) {
+                callbacks = std::make_unique<std::vector<onaction>>();
+            }
+            callbacks->push_back(callback);
+        }
+
+        void notify(GUI* gui) {
+            if (callbacks) {
+                for (auto& callback : *callbacks) {
+                    callback(gui);
+                }
+            }
+        }
+    };
     
     enum class Align {
         left, center, right,
@@ -87,9 +106,9 @@ namespace gui {
         /// @brief size supplier for the element (called on parent element size update)
         vec2supplier sizefunc = nullptr;
         /// @brief 'onclick' callbacks
-        std::vector<onaction> actions;
+        ActionsSet actions;
         /// @brief 'ondoubleclick' callbacks
-        std::vector<onaction> doubleClickCallbacks;
+        ActionsSet doubleClickCallbacks;
 
         UINode(glm::vec2 size);
     public:
diff --git a/src/graphics/ui/gui_xml.cpp b/src/graphics/ui/gui_xml.cpp
index 70323cce..3484cc45 100644
--- a/src/graphics/ui/gui_xml.cpp
+++ b/src/graphics/ui/gui_xml.cpp
@@ -50,6 +50,26 @@ static Gravity gravity_from_string(const std::string& str) {
     return Gravity::none;
 }
 
+static runnable create_runnable(UiXmlReader& reader, xml::xmlelement element, const std::string& name) {
+    if (element->has(name)) {
+        std::string text = element->attr(name).getText();
+        if (!text.empty()) {
+            return scripting::create_runnable(
+                reader.getEnvironment(), text, reader.getFilename()
+            );
+        }
+    }
+    return nullptr;
+}
+
+static onaction create_action(UiXmlReader& reader, xml::xmlelement element, const std::string& name) {
+    auto callback = create_runnable(reader, element, name);
+    if (callback == nullptr) {
+        return nullptr;
+    }
+    return [callback](GUI*) {callback();};
+}
+
 /* Read basic UINode properties */
 static void _readUINode(UiXmlReader& reader, xml::xmlelement element, UINode& node) {
     if (element->has("id")) {
@@ -119,28 +139,12 @@ static void _readUINode(UiXmlReader& reader, xml::xmlelement element, UINode& no
         ));
     }
 
-    if (element->has("onclick")) {
-        std::string text = element->attr("onclick").getText();
-        if (!text.empty()) {
-            auto callback = scripting::create_runnable(
-                reader.getEnvironment(), text, reader.getFilename()
-            );
-            node.listenAction([callback](GUI*) {
-                callback();
-            });
-        }
+    if (auto onclick = create_action(reader, element, "onclick")) {
+        node.listenAction(onclick);
     }
 
-    if (element->has("ondoubleclick")) {
-        std::string text = element->attr("ondoubleclick").getText();
-        if (!text.empty()) {
-            auto callback = scripting::create_runnable(
-                reader.getEnvironment(), text, reader.getFilename()
-            );
-            node.listenDoubleClick([callback](GUI*) {
-                callback();
-            });
-        }
+    if (auto ondoubleclick = create_action(reader, element, "ondoubleclick")) {
+        node.listenDoubleClick(ondoubleclick);
     }
 }
 
@@ -336,7 +340,6 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
             reader.getFilename()
         ));
     }
-
     if (element->has("supplier")) {
         textbox->setTextSupplier(scripting::create_wstring_supplier(
             reader.getEnvironment(),
@@ -357,6 +360,12 @@ static std::shared_ptr<UINode> readTextBox(UiXmlReader& reader, xml::xmlelement
             reader.getFilename()
         ));
     }
+    if (auto onUpPressed = create_runnable(reader, element, "onup")) {
+        textbox->setOnUpPressed(onUpPressed);
+    }
+    if (auto onDownPressed = create_runnable(reader, element, "ondown")) {
+        textbox->setOnDownPressed(onDownPressed);
+    }
     return textbox;
 }