Implemented back button in display framework

src/changevaluedisplay.h

@@ -23,8 +23,6 @@ public:
     virtual int shownValue() const = 0;
     virtual void setShownValue(int value) = 0;
 
-    virtual void confirm() = 0;
-
 protected:
     Label m_titleLabel{5, 5}; // 230, 25
     Label m_valueLabel{26, 81}; // 188, 53
@@ -55,13 +53,11 @@ public:
     void redraw() override;
 
     void rotate(int offset) override;
-    void button() override;
+    void confirm() override;
 
     int shownValue() const { return m_value; }
     void setShownValue(int value) { m_value = value; }
 
-    void confirm() override;
-
 private:
     Tvalue m_value{};
 
@@ -132,12 +128,6 @@ void ChangeValueDisplay<Tvalue>::rotate(int offset)
     m_rotateOffset += offset;
 }
 
-template<typename Tvalue>
-void ChangeValueDisplay<Tvalue>::button()
-{
-    m_pressed = true;
-}
-
 template<typename Tvalue>
 void ChangeValueDisplay<Tvalue>::confirm()
 {

src/demodisplay.h

@@ -7,10 +7,10 @@ namespace {
 class DemoDisplay : public Display, public virtual ActionInterface
 {
 public:
-    void button() override;
+    void confirm() override;
 };
 
-void DemoDisplay::button()
+void DemoDisplay::confirm()
 {
     triggered();
 }

src/display.h

@@ -20,7 +20,8 @@ public:
     virtual void stop() {}
 
     virtual void rotate(int offset) {}
-    virtual void button() {}
+    virtual void confirm() {}
+    virtual void back() {}
 
     virtual TextInterface *asTextInterface() { return nullptr; }
     virtual const TextInterface *asTextInterface() const { return nullptr; }

src/displays/lockscreen.h

@@ -29,7 +29,7 @@ public:
     void redraw() override;
     void stop() override;
 
-    void button() override;
+    void confirm() override;
     void rotate(int offset) override;
 
 private:
@@ -146,7 +146,7 @@ void Lockscreen::stop()
         currentMode = m_oldMode;
 }
 
-void Lockscreen::button()
+void Lockscreen::confirm()
 {
     m_pressed = true;
 }

src/displays/statusdisplay.h

@@ -148,8 +148,8 @@ void StatusDisplay::redraw()
     m_labelBrems.redraw(String{brems});
     m_progressBarBrems.redraw(brems);
 
-    m_frontStatus.redraw(front);
+    m_frontStatus.redraw(::front);
-    m_backStatus.redraw(back);
+    m_backStatus.redraw(::back);
 
     tft.setTextFont(2);
     m_labelWifiStatus.redraw(toString(WiFi.status()));

src/displays/updatedisplay.h

@@ -27,7 +27,7 @@ public:
     void start() override;
     void initScreen() override;
     void redraw() override;
-    void button() override;
+    void confirm() override;
 
 public:
     bool m_finished;
@@ -85,7 +85,7 @@ void UpdateDisplay::redraw()
     m_progressBar.redraw(float(m_progress) / m_total * 100.f);
 }
 
-void UpdateDisplay::button()
+void UpdateDisplay::confirm()
 {
     if (m_finished)
         switchScreen<StatusDisplay>();

src/menudisplay.h

@@ -22,7 +22,7 @@ public:
     void stop() override;
 
     void rotate(int offset) override;
-    void button() override;
+    void confirm() override;
 
     virtual void itemPressed(int index);
 
@@ -241,7 +241,7 @@ void MenuDisplay::rotate(int offset)
     m_rotateOffset += offset;
 }
 
-void MenuDisplay::button()
+void MenuDisplay::confirm()
 {
     m_pressed = true;
 }

src/screens.h

@@ -345,18 +345,32 @@ void updateDisplay()
             currentDisplay->initScreen();
     }
 
-    if (confirmButtonLongPressed)
-    {
-        confirmButtonLongPressed = false;
-        Serial.println("todo: implement long press");
-    }
-
     if (confirmButtonPressed)
     {
         confirmButtonPressed = false;
 
         if (currentDisplay)
-            currentDisplay->button();
+            currentDisplay->confirm();
+    }
+
+    if (confirmButtonLongPressed)
+    {
+        confirmButtonLongPressed = false;
+        Serial.println("todo: implement long press for confirm");
+    }
+
+    if (backButtonPressed)
+    {
+        backButtonPressed = false;
+
+        if (currentDisplay)
+            currentDisplay->back();
+    }
+
+    if (backButtonLongPressed)
+    {
+        backButtonLongPressed = false;
+        Serial.println("todo: implement long press for back");
     }
 
     if (currentDisplay)