Cleanup button handling in InsetInclude

The include inset has its own button_ object, that hides the button_
object of the InsetCommand parent. Remove that.

Remove the hand-made caching that uses the set_label_ boolean.

Let metrics() and draw() use the inherited methods. This requires to
use setBroken as needed and to implement inheritFont.

The use of InsetCommand::draw is what restores the hover effect.

Fixes bug #10415.

src/insets/InsetCommand.h

@@ -127,8 +127,6 @@ protected:
 	//@}
 
 private:
-	///
-	RenderButton & button() const { return button_; }
 	/// This should provide the text for the button
 	virtual docstring screenLabel() const = 0;
 

src/insets/InsetInclude.cpp

@@ -182,7 +182,7 @@ char_type replaceCommaInBraces(docstring & params)
 InsetInclude::InsetInclude(Buffer * buf, InsetCommandParams const & p)
 	: InsetCommand(buf, p), include_label(uniqueID()),
 	  preview_(make_unique<RenderMonitoredPreview>(this)), failedtoload_(false),
-	  set_label_(false), label_(nullptr), child_buffer_(nullptr), file_exist_(false),
+	  label_(nullptr), child_buffer_(nullptr), file_exist_(false),
 	  recursion_error_(false)
 {
 	preview_->connect([this](){ fileChanged(); });
@@ -198,7 +198,7 @@ InsetInclude::InsetInclude(Buffer * buf, InsetCommandParams const & p)
 InsetInclude::InsetInclude(InsetInclude const & other)
 	: InsetCommand(other), include_label(other.include_label),
 	  preview_(make_unique<RenderMonitoredPreview>(this)), failedtoload_(false),
-	  set_label_(false), label_(nullptr), child_buffer_(nullptr), 
+	  label_(nullptr), child_buffer_(nullptr),
 	  file_exist_(other.file_exist_),recursion_error_(other.recursion_error_)
 {
 	preview_->connect([this](){ fileChanged(); });
@@ -376,7 +376,6 @@ void InsetInclude::setParams(InsetCommandParams const & p)
 	recursion_error_ = false;
 
 	InsetCommand::setParams(p);
-	set_label_ = false;
 
 	if (preview_->monitoring())
 		preview_->stopMonitoring();
@@ -1196,6 +1195,12 @@ void InsetInclude::collectBibKeys(InsetIterator const & /*di*/, FileNameList & c
 }
 
 
+bool InsetInclude::inheritFont() const
+{
+	return !isVerbatim(params());
+}
+
+
 void InsetInclude::metrics(MetricsInfo & mi, Dimension & dim) const
 {
 	LBUFERR(mi.base.bv);
@@ -1210,13 +1215,9 @@ void InsetInclude::metrics(MetricsInfo & mi, Dimension & dim) const
 	if (use_preview) {
 		preview_->metrics(mi, dim);
 	} else {
-		if (!set_label_) {
+		setBroken(!file_exist_ || recursion_error_);
-			set_label_ = true;
+		InsetCommand::metrics(mi, dim);
-			button_.update(screenLabel(), true, false, !file_exist_ || recursion_error_);
-		}
-		button_.metrics(mi, dim);
 	}
-
 }
 
 
@@ -1234,7 +1235,7 @@ void InsetInclude::draw(PainterInfo & pi, int x, int y) const
 	if (use_preview)
 		preview_->draw(pi, x, y);
 	else
-		button_.draw(pi, x, y);
+		InsetCommand::draw(pi, x, y);
 }
 
 
@@ -1425,12 +1426,9 @@ void InsetInclude::updateBuffer(ParIterator const & it, UpdateType utype, bool c
 	if (childbuffer) {
 		if (!checkForRecursiveInclude(childbuffer))
 			childbuffer->updateBuffer(Buffer::UpdateChildOnly, utype);
-		button_.update(screenLabel(), true, false, recursion_error_);
 		return;
 	}
 
-	button_.update(screenLabel(), true, false, !file_exist_);
-
 	if (!isListings(params()))
 		return;
 

src/insets/InsetInclude.h

@@ -15,8 +15,6 @@
 
 #include "InsetCommand.h"
 
-#include "RenderButton.h"
-
 #include "support/unique_ptr.h"
 
 
@@ -70,6 +68,8 @@ public:
 	void setBuffer(Buffer & buffer) override;
 	///
 	bool isLabeled() const override { return true; }
+	///
+	bool inheritFont() const override;
 	/// Override these InsetButton methods if Previewing
 	void metrics(MetricsInfo & mi, Dimension & dim) const override;
 	///
@@ -168,8 +168,6 @@ private:
 	///
 	mutable bool failedtoload_;
 	/// cache
-	mutable bool set_label_;
-	mutable RenderButton button_;
 	mutable docstring listings_label_;
 	InsetLabel * label_;
 	mutable Buffer * child_buffer_;