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gui: basic syntax highlighting implementation (disabled)

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mappu 2024-07-06 12:41:57 +12:00
parent 60add3be86
commit 35a83eb483
1 changed files with 44 additions and 2 deletions
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46
main.go
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@ -41,7 +41,7 @@ type TMainForm struct {
insertRows map[int32]struct{} // Rows in the StringGrid that are to-be-inserted
deleteRows map[int32]struct{}
updateRows map[int32][]int32 // Row->cells that are to-be-updated
queryInput *vcl.TMemo
queryInput *vcl.TRichEdit
queryResult *vcl.TStringGrid
none *noLoadedDatabase
@ -293,7 +293,7 @@ func (f *TMainForm) OnFormCreate(sender vcl.IObject) {
queryExecBtn.SetImageIndex(imgResultsetNext)
queryExecBtn.SetOnClick(f.OnQueryExecute)
f.queryInput = vcl.NewMemo(queryTab)
f.queryInput = vcl.NewRichEdit(queryTab)
f.queryInput.SetParent(queryTab)
f.queryInput.SetHeight(MY_HEIGHT)
f.queryInput.SetAlign(types.AlTop)
@ -303,10 +303,12 @@ func (f *TMainForm) OnFormCreate(sender vcl.IObject) {
} else {
f.queryInput.Font().SetName("monospace")
}
f.queryInput.SetCursor(types.CrIBeam) // Use text cursor instead of default pointer cursor
f.queryInput.BorderSpacing().SetLeft(MY_SPACING)
//f.queryInput.BorderSpacing().SetTop(1)
f.queryInput.BorderSpacing().SetRight(MY_SPACING)
f.queryInput.SetBorderStyle(types.BsFrame)
// f.queryInput.SetOnKeyUp(f.OnQueryTextChanged) // Performs extremely slowly
vsplit := vcl.NewSplitter(queryTab)
vsplit.SetParent(queryTab)
@ -692,6 +694,46 @@ func (f *TMainForm) OnNavContextClose(sender vcl.IObject) {
// n.b. This triggers OnNavChange, which will then re-render from noLoadedDatabase{}
}
// func (f *TMainForm) OnQueryTextChanged(sender vcl.IObject) {
func (f *TMainForm) OnQueryTextChanged(sender vcl.IObject, key *types.Char, shift types.TShiftState) {
// FIXME changing the text colour calls the onchange handler recursively
// FIXME changing the text colour pushes into the undo stack
// Preserve
f.queryInput.Lines().BeginUpdate()
origPos := f.queryInput.SelStart()
origLen := f.queryInput.SelLength()
defer func() {
f.queryInput.SetSelStart(origPos)
f.queryInput.SetSelLength(origLen)
f.queryInput.Lines().EndUpdate()
}()
tx := strings.ToLower(f.queryInput.Text())
// Reset all existing colors
f.queryInput.SetSelStart(0)
f.queryInput.SetSelLength(int32(len(tx)))
f.queryInput.SelAttributes().SetColor(colors.ClBlack)
searchPos := 0
for {
matchPos := strings.Index(tx[searchPos:], "select")
if matchPos == -1 {
break
}
matchPos += searchPos // compensate for slicing
f.queryInput.SetSelStart(int32(matchPos))
f.queryInput.SetSelLength(6)
f.queryInput.SelAttributes().SetColor(colors.ClRed)
searchPos = matchPos + 6 // strlen(SELECT)
}
}
func (f *TMainForm) OnQueryExecute(sender vcl.IObject) {
// If query tab is not selected, switch to it, but do not exec
if f.Tabs.ActivePageIndex() != 2 {