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package ui
import (
"github.com/jroimartin/gocui"
"github.com/sirupsen/logrus"
"github.com/spf13/viper"
)
type layoutManager struct {
fileTreeSplitRatio float64
controllers *Controller
}
// todo: this needs a major refactor (derive layout from view obj info, which should not live here)
func newLayoutManager(c *Controller) *layoutManager {
fileTreeSplitRatio := viper.GetFloat64("filetree.pane-width")
if fileTreeSplitRatio >= 1 || fileTreeSplitRatio <= 0 {
logrus.Errorf("invalid config value: 'filetree.pane-width' should be 0 < value < 1, given '%v'", fileTreeSplitRatio)
fileTreeSplitRatio = 0.5
}
return &layoutManager{
fileTreeSplitRatio: fileTreeSplitRatio,
controllers: c,
}
}
// IsNewView determines if a view has already been created based on the set of errors given (a bit hokie)
func IsNewView(errs ...error) bool {
for _, err := range errs {
if err == nil {
return false
}
if err != gocui.ErrUnknownView {
return false
}
}
return true
}
// layout defines the definition of the window pane size and placement relations to one another. This
// is invoked at application start and whenever the screen dimensions change.
func (lm *layoutManager) layout(g *gocui.Gui) error {
// TODO: this logic should be refactored into an abstraction that takes care of the math for us
maxX, maxY := g.Size()
var resized bool
if maxX != lastX {
resized = true
}
if maxY != lastY {
resized = true
}
lastX, lastY = maxX, maxY
splitCols := int(float64(maxX) * (1.0 - lm.fileTreeSplitRatio))
debugWidth := 0
if debug {
debugWidth = maxX / 4
}
debugCols := maxX - debugWidth
bottomRows := 1
headerRows := 2
filterBarHeight := 1
statusBarHeight := 1
statusBarIndex := 1
filterBarIndex := 2
layersHeight := len(lm.controllers.Layer.Layers) + headerRows + 1 // layers + header + base image layer row
maxLayerHeight := int(0.75 * float64(maxY))
if layersHeight > maxLayerHeight {
layersHeight = maxLayerHeight
}
var view, header *gocui.View
var viewErr, headerErr, err error
if !lm.controllers.Filter.IsVisible() {
bottomRows--
filterBarHeight = 0
}
// Debug pane
if debug {
if _, err := g.SetView("debug", debugCols, -1, maxX, maxY-bottomRows); err != nil {
if err != gocui.ErrUnknownView {
return err
}
}
}
// Layers
view, viewErr = g.SetView(lm.controllers.Layer.Name(), -1, -1+headerRows, splitCols, layersHeight)
header, headerErr = g.SetView(lm.controllers.Layer.Name()+"header", -1, -1, splitCols, headerRows)
if IsNewView(viewErr, headerErr) {
err = lm.controllers.Layer.Setup(view, header)
if err != nil {
logrus.Error("unable to setup layer controller", err)
return err
}
if _, err = g.SetCurrentView(lm.controllers.Layer.Name()); err != nil {
logrus.Error("unable to set view to layer", err)
return err
}
// since we are selecting the view, we should rerender to indicate it is selected
err = lm.controllers.Layer.Render()
if err != nil {
logrus.Error("unable to render layer view", err)
return err
}
}
// Details
view, viewErr = g.SetView(lm.controllers.Details.Name(), -1, -1+layersHeight+headerRows, splitCols, maxY-bottomRows)
header, headerErr = g.SetView(lm.controllers.Details.Name()+"header", -1, -1+layersHeight, splitCols, layersHeight+headerRows)
if IsNewView(viewErr, headerErr) {
err = lm.controllers.Details.Setup(view, header)
if err != nil {
return err
}
}
// Filetree
offset := 0
if !lm.controllers.Tree.AreAttributesVisible() {
offset = 1
}
view, viewErr = g.SetView(lm.controllers.Tree.Name(), splitCols, -1+headerRows-offset, debugCols, maxY-bottomRows)
header, headerErr = g.SetView(lm.controllers.Tree.Name()+"header", splitCols, -1, debugCols, headerRows-offset)
if IsNewView(viewErr, headerErr) {
err = lm.controllers.Tree.Setup(view, header)
if err != nil {
logrus.Error("unable to setup tree controller", err)
return err
}
}
err = lm.controllers.Tree.OnLayoutChange(resized)
if err != nil {
logrus.Error("unable to setup layer controller onLayoutChange", err)
return err
}
// Status Bar
view, viewErr = g.SetView(lm.controllers.Status.Name(), -1, maxY-statusBarHeight-statusBarIndex, maxX, maxY-(statusBarIndex-1))
if IsNewView(viewErr, headerErr) {
err = lm.controllers.Status.Setup(view, nil)
if err != nil {
logrus.Error("unable to setup status controller", err)
return err
}
}
// Filter Bar
view, viewErr = g.SetView(lm.controllers.Filter.Name(), len(lm.controllers.Filter.HeaderStr())-1, maxY-filterBarHeight-filterBarIndex, maxX, maxY-(filterBarIndex-1))
header, headerErr = g.SetView(lm.controllers.Filter.Name()+"header", -1, maxY-filterBarHeight-filterBarIndex, len(lm.controllers.Filter.HeaderStr()), maxY-(filterBarIndex-1))
if IsNewView(viewErr, headerErr) {
err = lm.controllers.Filter.Setup(view, header)
if err != nil {
logrus.Error("unable to setup filter controller", err)
return err
}
}
return nil
}
|
