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Bugfix in TreeView which may have caused an index out of range. Fixes #262 (hopefully)

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This commit is contained in:
Oliver 2019-05-13 16:28:25 +02:00
parent 7a653a04b3
commit f2bf2be1ba
1 changed files with 18 additions and 14 deletions
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32
treeview.go
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@ -409,22 +409,26 @@ func (t *TreeView) process() {
node.graphicsX = 0
node.textX = 0
}
if node.textX > maxTextX {
maxTextX = node.textX
}
if node == t.currentNode && node.selectable {
selectedIndex = len(t.nodes)
}
// Maybe we want to skip this level.
if t.topLevel == node.level && (topLevelGraphicsX < 0 || node.graphicsX < topLevelGraphicsX) {
topLevelGraphicsX = node.graphicsX
}
// Add and recurse (if desired).
// Add the node to the list.
if node.level >= t.topLevel {
// This node will be visible.
if node.textX > maxTextX {
maxTextX = node.textX
}
if node == t.currentNode && node.selectable {
selectedIndex = len(t.nodes)
}
// Maybe we want to skip this level.
if t.topLevel == node.level && (topLevelGraphicsX < 0 || node.graphicsX < topLevelGraphicsX) {
topLevelGraphicsX = node.graphicsX
}
t.nodes = append(t.nodes, node)
}
// Recurse if desired.
return node.expanded
})
@ -478,7 +482,7 @@ func (t *TreeView) process() {
}
}
newSelectedIndex = selectedIndex
case treePageUp:
case treePageDown:
if newSelectedIndex+height < len(t.nodes) {
newSelectedIndex += height
} else {
@ -490,7 +494,7 @@ func (t *TreeView) process() {
}
}
newSelectedIndex = selectedIndex
case treePageDown:
case treePageUp:
if newSelectedIndex >= height {
newSelectedIndex -= height
} else {