Refactor message parsing things

ui/messages/html/codeblock.go

@@ -0,0 +1,48 @@
+// gomuks - A terminal Matrix client written in Go.
+// Copyright (C) 2019 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package html
+
+import (
+	"maunium.net/go/mauview"
+	"maunium.net/go/tcell"
+)
+
+type CodeBlockEntity struct {
+	*BaseEntity
+	Background tcell.Style
+}
+
+func NewCodeBlockEntity(children []Entity, background tcell.Style) *CodeBlockEntity {
+	return &CodeBlockEntity{
+		BaseEntity: &BaseEntity{
+			Tag:      "pre",
+			Block:    true,
+			Children: children,
+		},
+		Background: background,
+	}
+}
+
+func (ce *CodeBlockEntity) Draw(screen mauview.Screen) {
+	screen.Fill(' ', ce.Background)
+	ce.BaseEntity.Draw(screen)
+}
+
+func (ce *CodeBlockEntity) AdjustStyle(fn AdjustStyleFunc) Entity {
+	// Don't allow adjusting code block style.
+	return ce
+}