mirror of https://github.com/bcicen/ctop.git
126 lines
2.2 KiB
Go
126 lines
2.2 KiB
Go
package main
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import (
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ui "github.com/gizak/termui"
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)
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type GridCursor struct {
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selectedID string // id of currently selected container
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filtered Containers
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cSource ContainerSource
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}
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func NewGridCursor() *GridCursor {
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return &GridCursor{
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cSource: NewDockerContainerSource(),
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}
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}
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func (gc *GridCursor) Len() int { return len(gc.filtered) }
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func (gc *GridCursor) Selected() *Container { return gc.filtered[gc.Idx()] }
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// Refresh containers from source
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func (gc *GridCursor) RefreshContainers() (lenChanged bool) {
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oldLen := gc.Len()
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// Containers filtered by display bool
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gc.filtered = Containers{}
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var cursorVisible bool
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for _, c := range gc.cSource.All() {
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if c.display {
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if c.Id == gc.selectedID {
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cursorVisible = true
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}
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gc.filtered = append(gc.filtered, c)
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}
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}
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if oldLen != gc.Len() {
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lenChanged = true
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}
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if !cursorVisible {
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gc.Reset()
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}
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if gc.selectedID == "" {
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gc.Reset()
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}
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return lenChanged
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}
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// Set an initial cursor position, if possible
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func (gc *GridCursor) Reset() {
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for _, c := range gc.cSource.All() {
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c.Widgets.Name.UnHighlight()
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}
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if gc.Len() > 0 {
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gc.selectedID = gc.filtered[0].Id
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gc.filtered[0].Widgets.Name.Highlight()
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}
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}
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// Return current cursor index
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func (gc *GridCursor) Idx() int {
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for n, c := range gc.filtered {
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if c.Id == gc.selectedID {
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return n
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}
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}
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gc.Reset()
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return 0
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}
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func (gc *GridCursor) ScrollPage() {
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// skip scroll if no need to page
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if gc.Len() < cGrid.MaxRows() {
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cGrid.Offset = 0
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return
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}
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idx := gc.Idx()
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// page down
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if idx >= cGrid.Offset+cGrid.MaxRows() {
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cGrid.Offset++
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cGrid.Align()
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}
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// page up
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if idx < cGrid.Offset {
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cGrid.Offset--
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cGrid.Align()
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}
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}
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func (gc *GridCursor) Up() {
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idx := gc.Idx()
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if idx <= 0 { // already at top
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return
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}
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active := gc.filtered[idx]
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next := gc.filtered[idx-1]
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active.Widgets.Name.UnHighlight()
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gc.selectedID = next.Id
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next.Widgets.Name.Highlight()
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gc.ScrollPage()
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ui.Render(cGrid)
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}
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func (gc *GridCursor) Down() {
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idx := gc.Idx()
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if idx >= gc.Len()-1 { // already at bottom
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return
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}
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active := gc.filtered[idx]
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next := gc.filtered[idx+1]
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active.Widgets.Name.UnHighlight()
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gc.selectedID = next.Id
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next.Widgets.Name.Highlight()
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gc.ScrollPage()
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ui.Render(cGrid)
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}
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