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package controllers
import (
"errors"
"fmt"
"github.com/jesseduffield/lazygit/pkg/gui/context"
"github.com/jesseduffield/lazygit/pkg/gui/types"
"github.com/samber/lo"
)
// This controller lets you change the context size for diffs. The 'context' in 'context size' refers to the conventional meaning of the word 'context' in a diff, as opposed to lazygit's own idea of a 'context'.
var CONTEXT_KEYS_SHOWING_DIFFS = []types.ContextKey{
context.FILES_CONTEXT_KEY,
context.COMMIT_FILES_CONTEXT_KEY,
context.STASH_CONTEXT_KEY,
context.LOCAL_COMMITS_CONTEXT_KEY,
context.SUB_COMMITS_CONTEXT_KEY,
context.STAGING_MAIN_CONTEXT_KEY,
context.STAGING_SECONDARY_CONTEXT_KEY,
context.PATCH_BUILDING_MAIN_CONTEXT_KEY,
context.PATCH_BUILDING_SECONDARY_CONTEXT_KEY,
}
type ContextLinesController struct {
baseController
c *ControllerCommon
}
var _ types.IController = &ContextLinesController{}
func NewContextLinesController(
c *ControllerCommon,
) *ContextLinesController {
return &ContextLinesController{
baseController: baseController{},
c: c,
}
}
func (self *ContextLinesController) GetKeybindings(opts types.KeybindingsOpts) []*types.Binding {
bindings := []*types.Binding{
{
Key: opts.GetKey(opts.Config.Universal.IncreaseContextInDiffView),
Handler: self.Increase,
Description: self.c.Tr.IncreaseContextInDiffView,
Tooltip: self.c.Tr.IncreaseContextInDiffViewTooltip,
},
{
Key: opts.GetKey(opts.Config.Universal.DecreaseContextInDiffView),
Handler: self.Decrease,
Description: self.c.Tr.DecreaseContextInDiffView,
Tooltip: self.c.Tr.DecreaseContextInDiffViewTooltip,
},
}
return bindings
}
func (self *ContextLinesController) Context() types.Context {
return nil
}
func (self *ContextLinesController) Increase() error {
if self.isShowingDiff() {
if err := self.checkCanChangeContext(); err != nil {
return self.c.Error(err)
}
self.c.AppState.DiffContextSize++
return self.applyChange()
}
return nil
}
func (self *ContextLinesController) Decrease() error {
old_size := self.c.AppState.DiffContextSize
if self.isShowingDiff() && old_size > 1 {
if err := self.checkCanChangeContext(); err != nil {
return self.c.Error(err)
}
self.c.AppState.DiffContextSize = old_size - 1
return self.applyChange()
}
return nil
}
func (self *ContextLinesController) applyChange() error {
self.c.Toast(fmt.Sprintf(self.c.Tr.DiffContextSizeChanged, self.c.AppState.DiffContextSize))
self.c.SaveAppStateAndLogError()
currentContext := self.c.CurrentStaticContext()
switch currentContext.GetKey() {
// we make an exception for our staging and patch building contexts because they actually need to refresh their state afterwards.
case context.PATCH_BUILDING_MAIN_CONTEXT_KEY:
return self.c.Refresh(types.RefreshOptions{Scope: []types.RefreshableView{types.PATCH_BUILDING}})
case context.STAGING_MAIN_CONTEXT_KEY, context.STAGING_SECONDARY_CONTEXT_KEY:
return self.c.Refresh(types.RefreshOptions{Scope: []types.RefreshableView{types.STAGING}})
default:
return currentContext.HandleRenderToMain()
}
}
func (self *ContextLinesController) checkCanChangeContext() error {
if self.c.Git().Patch.PatchBuilder.Active() {
return errors.New(self.c.Tr.CantChangeContextSizeError)
}
return nil
}
func (self *ContextLinesController) isShowingDiff() bool {
return lo.Contains(
CONTEXT_KEYS_SHOWING_DIFFS,
self.c.CurrentStaticContext().GetKey(),
)
}
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