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git/lib/branch_delete.tcl
Shawn O. Pearce d41b43eb4c git-gui: Refactor branch switch to support detached head
This is a major rewrite of the way we perform switching between
branches and the subsequent update of the working directory.  Like
core Git we now use a single code path to perform all changes: our
new checkout_op class.  We also use it for branch creation/update
as it integrates the tracking branch fetch process along with a
very basic merge (fast-forward and reset only currently).

Because some users have literally hundreds of local branches we
use the standard revision picker (with its branch filtering tool)
to select the local branch, rather than keeping all of the local
branches in the Branch menu.  The branch menu listing out all of
the available branches is simply not sane for those types of huge
repositories.

Users can now checkout a detached head by ticking off the option
in the checkout dialog.  This option is off by default for the
obvious reason, but it can be easily enabled for any local branch
by simply checking it.  We also detach the head if any non local
branch was selected, or if a revision expression was entered.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-07-08 22:34:46 -04:00

149 lines
3.3 KiB
Tcl

# git-gui branch delete support
# Copyright (C) 2007 Shawn Pearce
class branch_delete {
field w ; # widget path
field w_heads ; # listbox of local head names
field w_check ; # revision picker for merge test
field w_delete ; # delete button
constructor dialog {} {
global current_branch
make_toplevel top w
wm title $top "[appname] ([reponame]): Delete Branch"
if {$top ne {.}} {
wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
}
label $w.header -text {Delete Local Branch} -font font_uibold
pack $w.header -side top -fill x
frame $w.buttons
set w_delete $w.buttons.delete
button $w_delete \
-text Delete \
-default active \
-state disabled \
-command [cb _delete]
pack $w_delete -side right
button $w.buttons.cancel \
-text {Cancel} \
-command [list destroy $w]
pack $w.buttons.cancel -side right -padx 5
pack $w.buttons -side bottom -fill x -pady 10 -padx 10
labelframe $w.list -text {Local Branches}
set w_heads $w.list.l
listbox $w_heads \
-height 10 \
-width 70 \
-selectmode extended \
-exportselection false \
-yscrollcommand [list $w.list.sby set]
scrollbar $w.list.sby -command [list $w.list.l yview]
pack $w.list.sby -side right -fill y
pack $w.list.l -side left -fill both -expand 1
pack $w.list -fill both -expand 1 -pady 5 -padx 5
set w_check [choose_rev::new \
$w.check \
{Delete Only If Merged Into} \
]
$w_check none {Always (Do not perform merge test.)}
pack $w.check -anchor nw -fill x -pady 5 -padx 5
foreach h [load_all_heads] {
if {$h ne $current_branch} {
$w_heads insert end $h
}
}
bind $w_heads <<ListboxSelect>> [cb _select]
bind $w <Visibility> "
grab $w
focus $w
"
bind $w <Key-Escape> [list destroy $w]
bind $w <Key-Return> [cb _delete]\;break
tkwait window $w
}
method _select {} {
if {[$w_heads curselection] eq {}} {
$w_delete configure -state disabled
} else {
$w_delete configure -state normal
}
}
method _delete {} {
if {[catch {set check_cmt [$w_check commit_or_die]}]} {
return
}
set to_delete [list]
set not_merged [list]
foreach i [$w_heads curselection] {
set b [$w_heads get $i]
if {[catch {
set o [git rev-parse --verify "refs/heads/$b"]
}]} continue
if {$check_cmt ne {}} {
if {[catch {set m [git merge-base $o $check_cmt]}]} continue
if {$o ne $m} {
lappend not_merged $b
continue
}
}
lappend to_delete [list $b $o]
}
if {$not_merged ne {}} {
set msg "The following branches are not completely merged into [$w_check get]:
- [join $not_merged "\n - "]"
tk_messageBox \
-icon info \
-type ok \
-title [wm title $w] \
-parent $w \
-message $msg
}
if {$to_delete eq {}} return
if {$check_cmt eq {}} {
set msg {Recovering deleted branches is difficult.
Delete the selected branches?}
if {[tk_messageBox \
-icon warning \
-type yesno \
-title [wm title $w] \
-parent $w \
-message $msg] ne yes} {
return
}
}
set failed {}
foreach i $to_delete {
set b [lindex $i 0]
set o [lindex $i 1]
if {[catch {git update-ref -d "refs/heads/$b" $o} err]} {
append failed " - $b: $err\n"
}
}
if {$failed ne {}} {
tk_messageBox \
-icon error \
-type ok \
-title [wm title $w] \
-parent $w \
-message "Failed to delete branches:\n$failed"
}
destroy $w
}
}