From 9b49eb3fef8215e9981ba8c78c4a0909b9fd990f Mon Sep 17 00:00:00 2001
From: Oliver <oliver@stockperformer.com>
Date: Tue, 15 Sep 2020 13:09:44 +0200
Subject: [PATCH] Added a "clicked" handler to TableCell. Resolves #470

---
 table.go    | 30 ++++++++++++++++++++++++++++--
 textview.go |  3 ++-
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/table.go b/table.go
index 3ce2503..5d06466 100644
--- a/table.go
+++ b/table.go
@@ -42,6 +42,11 @@ type TableCell struct {
 	// If set to true, this cell cannot be selected.
 	NotSelectable bool
 
+	// An optional handler for mouse clicks. This also fires if the cell is not
+	// selectable. If true is returned, no additional "selected" event is fired
+	// on selectable cells.
+	Clicked func() bool
+
 	// The position and width of the cell the last time table was drawn.
 	x, y, width int
 }
@@ -160,6 +165,14 @@ func (c *TableCell) GetLastPosition() (x, y, width int) {
 	return c.x, c.y, c.width
 }
 
+// SetClickedFunc sets a handler which fires when this cell is clicked. This is
+// independent of whether the cell is selectable or not. But for selectable
+// cells, if the function returns "true", the "selected" event is not fired.
+func (c *TableCell) SetClickedFunc(clicked func() bool) *TableCell {
+	c.Clicked = clicked
+	return c
+}
+
 // Table visualizes two-dimensional data consisting of rows and columns. Each
 // Table cell is defined via SetCell() by the TableCell type. They can be added
 // dynamically to the table and changed any time.
@@ -1247,8 +1260,21 @@ func (t *Table) MouseHandler() func(action MouseAction, event *tcell.EventMouse,
 
 		switch action {
 		case MouseLeftClick:
-			if t.rowsSelectable || t.columnsSelectable {
-				t.Select(t.cellAt(x, y))
+			selectEvent := true
+			row, column := t.cellAt(x, y)
+			if row >= 0 && row < len(t.cells) && column >= 0 {
+				cells := t.cells[row]
+				if column < len(cells) {
+					cell := cells[column]
+					if cell != nil && cell.Clicked != nil {
+						if noSelect := cell.Clicked(); noSelect {
+							selectEvent = false
+						}
+					}
+				}
+			}
+			if selectEvent && (t.rowsSelectable || t.columnsSelectable) {
+				t.Select(row, column)
 			}
 			setFocus(t)
 			consumed = true
diff --git a/textview.go b/textview.go
index bc117fd..aadac20 100644
--- a/textview.go
+++ b/textview.go
@@ -273,7 +273,8 @@ func (t *TextView) SetText(text string) *TextView {
 // to true, any region/color tags are stripped from the text.
 func (t *TextView) GetText(stripTags bool) string {
 	// Get the buffer.
-	buffer := t.buffer
+	buffer := make([]string, len(t.buffer), len(t.buffer)+1)
+	copy(buffer, t.buffer)
 	if !stripTags {
 		buffer = append(buffer, string(t.recentBytes))
 	}