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package ui
import (
"github.com/awesome-gocui/gocui"
"github.com/sirupsen/logrus"
"github.com/wagoodman/dive/dive/filetree"
"github.com/wagoodman/dive/dive/image"
"github.com/wagoodman/dive/runtime/ui/view"
"github.com/wagoodman/dive/runtime/ui/viewmodel"
"regexp"
)
type Controller struct {
gui *gocui.Gui
views *view.Views
}
func NewCollection(g *gocui.Gui, imageName string, analysis *image.AnalysisResult, cache filetree.Comparer) (*Controller, error) {
views, err := view.NewViews(g, imageName, analysis, cache)
if err != nil {
return nil, err
}
controller := &Controller{
gui: g,
views: views,
}
// layer view cursor down event should trigger an update in the file tree
controller.views.Layer.AddLayerChangeListener(controller.onLayerChange)
// update the status pane when a filetree option is changed by the user
controller.views.Tree.AddViewOptionChangeListener(controller.onFileTreeViewOptionChange)
// update the tree view while the user types into the filter view
controller.views.Filter.AddFilterEditListener(controller.onFilterEdit)
// propagate initial conditions to necessary views
err = controller.onLayerChange(viewmodel.LayerSelection{
Layer: controller.views.Layer.CurrentLayer(),
BottomTreeStart: 0,
BottomTreeStop: 0,
TopTreeStart: 0,
TopTreeStop: 0,
})
if err != nil {
return nil, err
}
return controller, nil
}
func (c *Controller) onFileTreeViewOptionChange() error {
err := c.views.Status.Update()
if err != nil {
return err
}
return c.views.Status.Render()
}
func (c *Controller) onFilterEdit(filter string) error {
var filterRegex *regexp.Regexp
var err error
if len(filter) > 0 {
filterRegex, err = regexp.Compile(filter)
if err != nil {
return err
}
}
c.views.Tree.SetFilterRegex(filterRegex)
err = c.views.Tree.Update()
if err != nil {
return err
}
return c.views.Tree.Render()
}
func (c *Controller) onLayerChange(selection viewmodel.LayerSelection) error {
// update the details
c.views.Details.SetCurrentLayer(selection.Layer)
// update the filetree
err := c.views.Tree.SetTree(selection.BottomTreeStart, selection.BottomTreeStop, selection.TopTreeStart, selection.TopTreeStop)
if err != nil {
return err
}
if c.views.Layer.CompareMode() == viewmodel.CompareAllLayers {
c.views.Tree.SetTitle("Aggregated Layer Contents")
} else {
c.views.Tree.SetTitle("Current Layer Contents")
}
// update details and filetree panes
return c.UpdateAndRender()
}
func (c *Controller) UpdateAndRender() error {
err := c.Update()
if err != nil {
logrus.Debug("failed update: ", err)
return err
}
err = c.Render()
if err != nil {
logrus.Debug("failed render: ", err)
return err
}
return nil
}
// Update refreshes the state objects for future rendering.
func (c *Controller) Update() error {
for _, controller := range c.views.All() {
err := controller.Update()
if err != nil {
logrus.Debug("unable to update controller: ")
return err
}
}
return nil
}
// Render flushes the state objects to the screen.
func (c *Controller) Render() error {
for _, controller := range c.views.All() {
if controller.IsVisible() {
err := controller.Render()
if err != nil {
return err
}
}
}
return nil
}
// ToggleView switches between the file view and the layer view and re-renders the screen.
func (c *Controller) ToggleView() (err error) {
v := c.gui.CurrentView()
if v == nil || v.Name() == c.views.Layer.Name() {
_, err = c.gui.SetCurrentView(c.views.Tree.Name())
c.views.Status.SetCurrentView(c.views.Tree)
} else {
_, err = c.gui.SetCurrentView(c.views.Layer.Name())
c.views.Status.SetCurrentView(c.views.Layer)
}
if err != nil {
logrus.Error("unable to toggle view: ", err)
return err
}
return c.UpdateAndRender()
}
func (c *Controller) ToggleFilterView() error {
// delete all user input from the tree view
err := c.views.Filter.ToggleVisible()
if err != nil {
logrus.Error("unable to toggle filter visibility: ", err)
return err
}
// we have just hidden the filter view...
if !c.views.Filter.IsVisible() {
// ...remove any filter from the tree
c.views.Tree.SetFilterRegex(nil)
// ...adjust focus to a valid (visible) view
err = c.ToggleView()
if err != nil {
logrus.Error("unable to toggle filter view (back): ", err)
return err
}
}
return c.UpdateAndRender()
}
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