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package main
const (
evMaxErrorDisplayNum = uint(5)
)
// ErrorView contains state for the error view
type ErrorView struct {
errors []error
}
// NewErrorView creates a new instance of the error view
func NewErrorView() *ErrorView {
return &ErrorView{}
}
// Initialise does nothing
func (errorView *ErrorView) Initialise() (err error) {
return
}
// SetErrors sets the errors for the error view to display
func (errorView *ErrorView) SetErrors(errors []error) {
errorView.errors = errors
}
// DisplayRowsRequired calculates the number of rows on the display required to display the errors the error view currently has set
func (errorView *ErrorView) DisplayRowsRequired() uint {
errorNum := uint(len(errorView.errors))
var rowsRequired uint
switch {
case errorNum == 0:
return 0
case errorNum > evMaxErrorDisplayNum:
rowsRequired = evMaxErrorDisplayNum + 1
default:
rowsRequired = errorNum
}
return rowsRequired + 2
}
// Render generates and writes the error view to the provided window
func (errorView *ErrorView) Render(win RenderWindow) (err error) {
errorNum := uint(len(errorView.errors))
errorDisplayNum := MinUInt(errorNum, evMaxErrorDisplayNum)
var lineBuilder *LineBuilder
for i := uint(1); i < win.Rows()-1 && i-1 < errorDisplayNum; i++ {
if lineBuilder, err = win.LineBuilder(i, 1); err != nil {
return err
}
err = errorView.errors[i-1]
lineBuilder.AppendWithStyle(CmpErrorViewErrors, " %v", err)
}
if errorDisplayNum < errorNum && win.Rows() >= evMaxErrorDisplayNum+3 {
if lineBuilder, err = win.LineBuilder(win.Rows()-2, 1); err != nil {
return
}
errorsNotDisplayed := errorNum - errorDisplayNum
suffix := ""
if errorsNotDisplayed > 1 {
suffix += "s"
}
lineBuilder.AppendWithStyle(CmpNone, " + %v more error%v", errorsNotDisplayed, suffix)
}
win.DrawBorder()
if err = win.SetTitle(CmpErrorViewTitle, "Errors"); err != nil {
return
}
errorText := "Error"
if errorNum > 1 {
errorText += "s"
}
err = win.SetFooter(CmpErrorViewFooter, "%v %v", errorNum, errorText)
return
}
// HandleEvent does nothing
func (errorView *ErrorView) HandleEvent(event Event) (err error) {
return
}
// HandleAction does nothing
func (errorView *ErrorView) HandleAction(Action) (err error) {
return
}
// OnStateChange does nothing
func (errorView *ErrorView) OnStateChange(ViewState) {
}
// ViewID returns the view ID of the error view
func (errorView *ErrorView) ViewID() ViewID {
return ViewError
}
// RenderHelpBar does nothing
func (errorView *ErrorView) RenderHelpBar(*LineBuilder) (err error) {
return
}
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