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lazygit/pkg/gui/list_context.go
2020-10-02 08:09:42 +10:00

555 lines
19 KiB
Go

package gui
import (
"github.com/jesseduffield/gocui"
"github.com/jesseduffield/lazygit/pkg/gui/presentation"
)
type ListContext struct {
ViewName string
ContextKey string
GetItemsLength func() int
GetDisplayStrings func() [][]string
OnFocus func() error
OnFocusLost func() error
OnClickSelectedItem func() error
OnGetOptionsMap func() map[string]string
// the boolean here tells us whether the item is nil. This is needed because you can't work it out on the calling end once the pointer is wrapped in an interface (unless you want to use reflection)
SelectedItem func() (ListItem, bool)
GetPanelState func() IListPanelState
Gui *Gui
ResetMainViewOriginOnFocus bool
Kind int
ParentContext Context
// we can't know on the calling end whether a Context is actually a nil value without reflection, so we're storing this flag here to tell us. There has got to be a better way around this.
hasParent bool
WindowName string
}
type ListItem interface {
// ID is a SHA when the item is a commit, a filename when the item is a file, 'stash@{4}' when it's a stash entry, 'my_branch' when it's a branch
ID() string
// Description is something we would show in a message e.g. '123as14: push blah' for a commit
Description() string
}
func (lc *ListContext) GetSelectedItem() (ListItem, bool) {
return lc.SelectedItem()
}
func (lc *ListContext) SetWindowName(windowName string) {
lc.WindowName = windowName
}
func (lc *ListContext) GetWindowName() string {
windowName := lc.WindowName
if windowName != "" {
return windowName
}
// TODO: actually set this for everything so we don't default to the view name
return lc.ViewName
}
func (lc *ListContext) SetParentContext(c Context) {
lc.ParentContext = c
lc.hasParent = true
}
func (lc *ListContext) GetParentContext() (Context, bool) {
return lc.ParentContext, lc.hasParent
}
func (lc *ListContext) GetSelectedItemId() string {
item, ok := lc.SelectedItem()
if !ok {
return ""
}
return item.ID()
}
func (lc *ListContext) GetOptionsMap() map[string]string {
if lc.OnGetOptionsMap != nil {
return lc.OnGetOptionsMap()
}
return nil
}
// OnFocus assumes that the content of the context has already been rendered to the view. OnRender is the function which actually renders the content to the view
func (lc *ListContext) OnRender() error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
if lc.GetDisplayStrings != nil {
lc.Gui.refreshSelectedLine(lc.GetPanelState(), lc.GetItemsLength())
lc.Gui.renderDisplayStrings(view, lc.GetDisplayStrings())
}
return nil
}
func (lc *ListContext) GetKey() string {
return lc.ContextKey
}
func (lc *ListContext) GetKind() int {
return lc.Kind
}
func (lc *ListContext) GetViewName() string {
return lc.ViewName
}
func (lc *ListContext) HandleFocusLost() error {
if lc.OnFocusLost != nil {
return lc.OnFocusLost()
}
return nil
}
func (lc *ListContext) HandleFocus() error {
if lc.Gui.popupPanelFocused() {
return nil
}
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
view.FocusPoint(0, lc.GetPanelState().GetSelectedLineIdx())
if lc.Gui.State.Modes.Diffing.Active() {
return lc.Gui.renderDiff()
}
if lc.OnFocus != nil {
return lc.OnFocus()
}
return nil
}
func (lc *ListContext) HandleRender() error {
return lc.OnRender()
}
func (lc *ListContext) handlePrevLine(g *gocui.Gui, v *gocui.View) error {
return lc.handleLineChange(-1)
}
func (lc *ListContext) handleNextLine(g *gocui.Gui, v *gocui.View) error {
return lc.handleLineChange(1)
}
func (lc *ListContext) handleLineChange(change int) error {
if !lc.Gui.isPopupPanel(lc.ViewName) && lc.Gui.popupPanelFocused() {
return nil
}
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return err
}
selectedLineIdx := lc.GetPanelState().GetSelectedLineIdx()
if (change < 0 && selectedLineIdx == 0) || (change > 0 && selectedLineIdx == lc.GetItemsLength()-1) {
return nil
}
lc.Gui.changeSelectedLine(lc.GetPanelState(), lc.GetItemsLength(), change)
view.FocusPoint(0, lc.GetPanelState().GetSelectedLineIdx())
if lc.ResetMainViewOriginOnFocus {
if err := lc.Gui.resetOrigin(lc.Gui.getMainView()); err != nil {
return err
}
if err := lc.Gui.resetOrigin(lc.Gui.getSecondaryView()); err != nil {
return err
}
}
return lc.HandleFocus()
}
func (lc *ListContext) handleNextPage(g *gocui.Gui, v *gocui.View) error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
_, height := view.Size()
delta := height - 1
if delta == 0 {
delta = 1
}
return lc.handleLineChange(delta)
}
func (lc *ListContext) handleGotoTop(g *gocui.Gui, v *gocui.View) error {
return lc.handleLineChange(-lc.GetItemsLength())
}
func (lc *ListContext) handleGotoBottom(g *gocui.Gui, v *gocui.View) error {
return lc.handleLineChange(lc.GetItemsLength())
}
func (lc *ListContext) handlePrevPage(g *gocui.Gui, v *gocui.View) error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
_, height := view.Size()
delta := height - 1
if delta == 0 {
delta = 1
}
return lc.handleLineChange(-delta)
}
func (lc *ListContext) handleClick(g *gocui.Gui, v *gocui.View) error {
if !lc.Gui.isPopupPanel(lc.ViewName) && lc.Gui.popupPanelFocused() {
return nil
}
prevSelectedLineIdx := lc.GetPanelState().GetSelectedLineIdx()
newSelectedLineIdx := v.SelectedLineIdx()
// we need to focus the view
if err := lc.Gui.switchContext(lc); err != nil {
return err
}
if newSelectedLineIdx > lc.GetItemsLength()-1 {
return nil
}
lc.GetPanelState().SetSelectedLineIdx(newSelectedLineIdx)
prevViewName := lc.Gui.currentViewName()
if prevSelectedLineIdx == newSelectedLineIdx && prevViewName == lc.ViewName && lc.OnClickSelectedItem != nil {
return lc.OnClickSelectedItem()
}
return lc.HandleFocus()
}
func (lc *ListContext) onSearchSelect(selectedLineIdx int) error {
lc.GetPanelState().SetSelectedLineIdx(selectedLineIdx)
return lc.HandleFocus()
}
func (gui *Gui) menuListContext() *ListContext {
return &ListContext{
ViewName: "menu",
ContextKey: "menu",
GetItemsLength: func() int { return gui.getMenuView().LinesHeight() },
GetPanelState: func() IListPanelState { return gui.State.Panels.Menu },
OnFocus: gui.handleMenuSelect,
OnClickSelectedItem: func() error { return gui.onMenuPress() },
Gui: gui,
ResetMainViewOriginOnFocus: false,
Kind: PERSISTENT_POPUP,
OnGetOptionsMap: gui.getMenuOptions,
// no GetDisplayStrings field because we do a custom render on menu creation
}
}
func (gui *Gui) filesListContext() *ListContext {
return &ListContext{
ViewName: "files",
ContextKey: FILES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Files) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Files },
OnFocus: gui.focusAndSelectFile,
OnClickSelectedItem: gui.handleFilePress,
Gui: gui,
ResetMainViewOriginOnFocus: false,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetFileListDisplayStrings(gui.State.Files, gui.State.Modes.Diffing.Ref, gui.State.Submodules)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedFile()
return item, item != nil
},
}
}
func (gui *Gui) branchesListContext() *ListContext {
return &ListContext{
ViewName: "branches",
ContextKey: LOCAL_BRANCHES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Branches) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Branches },
OnFocus: gui.handleBranchSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetBranchListDisplayStrings(gui.State.Branches, gui.State.ScreenMode != SCREEN_NORMAL, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedBranch()
return item, item != nil
},
}
}
func (gui *Gui) remotesListContext() *ListContext {
return &ListContext{
ViewName: "branches",
ContextKey: REMOTES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Remotes) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Remotes },
OnFocus: gui.handleRemoteSelect,
OnClickSelectedItem: gui.handleRemoteEnter,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetRemoteListDisplayStrings(gui.State.Remotes, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedRemote()
return item, item != nil
},
}
}
func (gui *Gui) remoteBranchesListContext() *ListContext {
return &ListContext{
ViewName: "branches",
ContextKey: REMOTE_BRANCHES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.RemoteBranches) },
GetPanelState: func() IListPanelState { return gui.State.Panels.RemoteBranches },
OnFocus: gui.handleRemoteBranchSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetRemoteBranchListDisplayStrings(gui.State.RemoteBranches, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedRemoteBranch()
return item, item != nil
},
}
}
func (gui *Gui) tagsListContext() *ListContext {
return &ListContext{
ViewName: "branches",
ContextKey: TAGS_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Tags) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Tags },
OnFocus: gui.handleTagSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetTagListDisplayStrings(gui.State.Tags, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedTag()
return item, item != nil
},
}
}
func (gui *Gui) branchCommitsListContext() *ListContext {
return &ListContext{
ViewName: "commits",
ContextKey: BRANCH_COMMITS_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Commits) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Commits },
OnFocus: gui.handleCommitSelect,
OnClickSelectedItem: gui.handleViewCommitFiles,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetCommitListDisplayStrings(gui.State.Commits, gui.State.ScreenMode != SCREEN_NORMAL, gui.cherryPickedCommitShaMap(), gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedLocalCommit()
return item, item != nil
},
}
}
func (gui *Gui) reflogCommitsListContext() *ListContext {
return &ListContext{
ViewName: "commits",
ContextKey: REFLOG_COMMITS_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.FilteredReflogCommits) },
GetPanelState: func() IListPanelState { return gui.State.Panels.ReflogCommits },
OnFocus: gui.handleReflogCommitSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetReflogCommitListDisplayStrings(gui.State.FilteredReflogCommits, gui.State.ScreenMode != SCREEN_NORMAL, gui.cherryPickedCommitShaMap(), gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedReflogCommit()
return item, item != nil
},
}
}
func (gui *Gui) subCommitsListContext() *ListContext {
return &ListContext{
ViewName: "branches",
ContextKey: SUB_COMMITS_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.SubCommits) },
GetPanelState: func() IListPanelState { return gui.State.Panels.SubCommits },
OnFocus: gui.handleSubCommitSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetCommitListDisplayStrings(gui.State.SubCommits, gui.State.ScreenMode != SCREEN_NORMAL, gui.cherryPickedCommitShaMap(), gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedSubCommit()
return item, item != nil
},
}
}
func (gui *Gui) stashListContext() *ListContext {
return &ListContext{
ViewName: "stash",
ContextKey: STASH_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.StashEntries) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Stash },
OnFocus: gui.handleStashEntrySelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetStashEntryListDisplayStrings(gui.State.StashEntries, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedStashEntry()
return item, item != nil
},
}
}
func (gui *Gui) commitFilesListContext() *ListContext {
return &ListContext{
ViewName: "commitFiles",
WindowName: "commits",
ContextKey: COMMIT_FILES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.CommitFiles) },
GetPanelState: func() IListPanelState { return gui.State.Panels.CommitFiles },
OnFocus: gui.handleCommitFileSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetCommitFileListDisplayStrings(gui.State.CommitFiles, gui.State.Modes.Diffing.Ref)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedCommitFile()
return item, item != nil
},
}
}
func (gui *Gui) submodulesListContext() *ListContext {
return &ListContext{
ViewName: "files",
WindowName: "files",
ContextKey: SUBMODULES_CONTEXT_KEY,
GetItemsLength: func() int { return len(gui.State.Submodules) },
GetPanelState: func() IListPanelState { return gui.State.Panels.Submodules },
OnFocus: gui.handleSubmoduleSelect,
Gui: gui,
ResetMainViewOriginOnFocus: true,
Kind: SIDE_CONTEXT,
GetDisplayStrings: func() [][]string {
return presentation.GetSubmoduleListDisplayStrings(gui.State.Submodules)
},
SelectedItem: func() (ListItem, bool) {
item := gui.getSelectedSubmodule()
return item, item != nil
},
}
}
func (gui *Gui) getListContexts() []*ListContext {
return []*ListContext{
gui.menuListContext(),
gui.filesListContext(),
gui.branchesListContext(),
gui.remotesListContext(),
gui.remoteBranchesListContext(),
gui.tagsListContext(),
gui.branchCommitsListContext(),
gui.reflogCommitsListContext(),
gui.subCommitsListContext(),
gui.stashListContext(),
gui.commitFilesListContext(),
gui.submodulesListContext(),
}
}
func (gui *Gui) getListContextKeyBindings() []*Binding {
bindings := make([]*Binding, 0)
for _, listContext := range gui.getListContexts() {
bindings = append(bindings, []*Binding{
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.prevItem-alt"), Modifier: gocui.ModNone, Handler: listContext.handlePrevLine},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.prevItem"), Modifier: gocui.ModNone, Handler: listContext.handlePrevLine},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gocui.MouseWheelUp, Modifier: gocui.ModNone, Handler: listContext.handlePrevLine},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.nextItem-alt"), Modifier: gocui.ModNone, Handler: listContext.handleNextLine},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.nextItem"), Modifier: gocui.ModNone, Handler: listContext.handleNextLine},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.prevPage"), Modifier: gocui.ModNone, Handler: listContext.handlePrevPage, Description: gui.Tr.SLocalize("prevPage")},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.nextPage"), Modifier: gocui.ModNone, Handler: listContext.handleNextPage, Description: gui.Tr.SLocalize("nextPage")},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gui.getKey("universal.gotoTop"), Modifier: gocui.ModNone, Handler: listContext.handleGotoTop, Description: gui.Tr.SLocalize("gotoTop")},
{ViewName: listContext.ViewName, Tag: "navigation", Contexts: []string{listContext.ContextKey}, Key: gocui.MouseWheelDown, Modifier: gocui.ModNone, Handler: listContext.handleNextLine},
{ViewName: listContext.ViewName, Contexts: []string{listContext.ContextKey}, Key: gocui.MouseLeft, Modifier: gocui.ModNone, Handler: listContext.handleClick},
}...)
// the commits panel needs to lazyload things so it has a couple of its own handlers
openSearchHandler := gui.handleOpenSearch
gotoBottomHandler := listContext.handleGotoBottom
if listContext.ViewName == "commits" {
openSearchHandler = gui.handleOpenSearchForCommitsPanel
gotoBottomHandler = gui.handleGotoBottomForCommitsPanel
}
bindings = append(bindings, []*Binding{
{
ViewName: listContext.ViewName,
Contexts: []string{listContext.ContextKey},
Key: gui.getKey("universal.startSearch"),
Handler: openSearchHandler,
Description: gui.Tr.SLocalize("startSearch"),
Tag: "navigation",
},
{
ViewName: listContext.ViewName,
Contexts: []string{listContext.ContextKey},
Key: gui.getKey("universal.gotoBottom"),
Handler: gotoBottomHandler,
Description: gui.Tr.SLocalize("gotoBottom"),
Tag: "navigation",
},
}...)
}
return bindings
}