field name {}; # name of the branch the user has chosen
field name_type user; # type of branch name to use
+field opt_merge ff; # type of merge to apply to existing branch
field opt_checkout 1; # automatically checkout the new branch?
+field reset_ok 0; # did the user agree to reset?
constructor dialog {} {
global repo_config
set w_rev [::choose_rev::new $w.rev {Starting Revision}]
pack $w.rev -anchor nw -fill x -pady 5 -padx 5
- labelframe $w.postActions -text {Post Creation Actions}
- checkbutton $w.postActions.checkout \
- -text {Checkout after creation} \
+ labelframe $w.options -text {Options}
+
+ frame $w.options.merge
+ label $w.options.merge.l -text {Update Existing Branch:}
+ pack $w.options.merge.l -side left
+ radiobutton $w.options.merge.no \
+ -text No \
+ -value no \
+ -variable @opt_merge
+ pack $w.options.merge.no -side left
+ radiobutton $w.options.merge.ff \
+ -text {Fast Forward Only} \
+ -value ff \
+ -variable @opt_merge
+ pack $w.options.merge.ff -side left
+ radiobutton $w.options.merge.reset \
+ -text {Reset} \
+ -value reset \
+ -variable @opt_merge
+ pack $w.options.merge.reset -side left
+ pack $w.options.merge -anchor nw
+
+ checkbutton $w.options.checkout \
+ -text {Checkout After Creation} \
-variable @opt_checkout
- pack $w.postActions.checkout -anchor nw
- pack $w.postActions -anchor nw -fill x -pady 5 -padx 5
+ pack $w.options.checkout -anchor nw
+ pack $w.options -anchor nw -fill x -pady 5 -padx 5
set name $repo_config(gui.newbranchtemplate)
method _create {} {
global null_sha1 repo_config
- global all_heads
+ global all_heads current_branch
switch -- $name_type {
user {
focus $w_name
return
}
- if {![catch {git show-ref --verify -- "refs/heads/$newbranch"}]} {
+
+ if {$newbranch eq $current_branch} {
tk_messageBox \
-icon error \
-type ok \
-title [wm title $w] \
-parent $w \
- -message "Branch '$newbranch' already exists."
+ -message "'$newbranch' already exists and is the current branch."
focus $w_name
return
}
+
if {[catch {git check-ref-format "heads/$newbranch"}]} {
tk_messageBox \
-icon error \
-type ok \
-title [wm title $w] \
-parent $w \
- -message "We do not like '$newbranch' as a branch name."
+ -message "'$newbranch' is not an acceptable branch name."
focus $w_name
return
}
- if {[catch {set cmt [$w_rev get_commit]}]} {
+ if {[catch {set new [$w_rev get_commit]}]} {
tk_messageBox \
-icon error \
-type ok \
-title [wm title $w] \
-parent $w \
- -message "Invalid starting revision: [$w_rev get]"
+ -message "Invalid revision: [$w_rev get]"
return
}
- if {[catch {
- git update-ref \
- -m "branch: Created from [$w_rev get]" \
- "refs/heads/$newbranch" \
- $cmt \
- $null_sha1
- } err]} {
+
+ set ref refs/heads/$newbranch
+ if {[catch {set cur [git rev-parse --verify "$ref^0"]}]} {
+ # Assume it does not exist, and that is what the error was.
+ #
+ set reflog_msg "branch: Created from [$w_rev get]"
+ set cur $null_sha1
+ } elseif {$opt_merge eq {no}} {
tk_messageBox \
-icon error \
-type ok \
-title [wm title $w] \
-parent $w \
- -message "Failed to create '$newbranch'.\n\n$err"
+ -message "Branch '$newbranch' already exists."
+ focus $w_name
return
+ } else {
+ set mrb {}
+ catch {set mrb [git merge-base $new $cur]}
+ switch -- $opt_merge {
+ ff {
+ if {$mrb eq $new} {
+ # The current branch is actually newer.
+ #
+ set new $cur
+ } elseif {$mrb eq $cur} {
+ # The current branch is older.
+ #
+ set reflog_msg "merge [$w_rev get]: Fast-forward"
+ } else {
+ tk_messageBox \
+ -icon error \
+ -type ok \
+ -title [wm title $w] \
+ -parent $w \
+ -message "Branch '$newbranch' already exists.\n\nIt cannot fast-forward to [$w_rev get].\nA merge is required."
+ focus $w_name
+ return
+ }
+ }
+ reset {
+ if {$mrb eq $cur} {
+ # The current branch is older.
+ #
+ set reflog_msg "merge [$w_rev get]: Fast-forward"
+ } else {
+ # The current branch will lose things.
+ #
+ if {[_confirm_reset $this $newbranch $cur $new]} {
+ set reflog_msg "reset [$w_rev get]"
+ } else {
+ return
+ }
+ }
+ }
+ default {
+ tk_messageBox \
+ -icon error \
+ -type ok \
+ -title [wm title $w] \
+ -parent $w \
+ -message "Branch '$newbranch' already exists."
+ focus $w_name
+ return
+ }
+ }
+ }
+
+ if {$new ne $cur} {
+ if {[catch {
+ git update-ref -m $reflog_msg $ref $new $cur
+ } err]} {
+ tk_messageBox \
+ -icon error \
+ -type ok \
+ -title [wm title $w] \
+ -parent $w \
+ -message "Failed to create '$newbranch'.\n\n$err"
+ return
+ }
+ }
+
+ if {$cur eq $null_sha1} {
+ lappend all_heads $newbranch
+ set all_heads [lsort -uniq $all_heads]
+ populate_branch_menu
}
- lappend all_heads $newbranch
- set all_heads [lsort $all_heads]
- populate_branch_menu
destroy $w
if {$opt_checkout} {
switch_branch $newbranch
}
}
+method _confirm_reset {newbranch cur new} {
+ set reset_ok 0
+ set gitk [list do_gitk [list $cur ^$new]]
+
+ set c $w.confirm_reset
+ toplevel $c
+ wm title $c "Confirm Branch Reset"
+ wm geometry $c "+[winfo rootx $w]+[winfo rooty $w]"
+
+ pack [label $c.msg1 \
+ -anchor w \
+ -justify left \
+ -text "Resetting '$newbranch' to [$w_rev get] will lose the following commits:" \
+ ] -anchor w
+
+ set list $c.list.l
+ frame $c.list
+ text $list \
+ -font font_diff \
+ -width 80 \
+ -height 10 \
+ -wrap none \
+ -xscrollcommand [list $c.list.sbx set] \
+ -yscrollcommand [list $c.list.sby set]
+ scrollbar $c.list.sbx -orient h -command [list $list xview]
+ scrollbar $c.list.sby -orient v -command [list $list yview]
+ pack $c.list.sbx -fill x -side bottom
+ pack $c.list.sby -fill y -side right
+ pack $list -fill both -expand 1
+ pack $c.list -fill both -expand 1 -padx 5 -pady 5
+
+ pack [label $c.msg2 \
+ -anchor w \
+ -justify left \
+ -text "Recovering lost commits may not be easy." \
+ ]
+ pack [label $c.msg3 \
+ -anchor w \
+ -justify left \
+ -text "Reset '$newbranch'?" \
+ ]
+
+ frame $c.buttons
+ button $c.buttons.visualize \
+ -text Visualize \
+ -command $gitk
+ pack $c.buttons.visualize -side left
+ button $c.buttons.reset \
+ -text Reset \
+ -command "
+ set @reset_ok 1
+ destroy $c
+ "
+ pack $c.buttons.reset -side right
+ button $c.buttons.cancel \
+ -default active \
+ -text Cancel \
+ -command [list destroy $c]
+ pack $c.buttons.cancel -side right -padx 5
+ pack $c.buttons -side bottom -fill x -pady 10 -padx 10
+
+ set fd [open "| git rev-list --pretty=oneline $cur ^$new" r]
+ while {[gets $fd line] > 0} {
+ set abbr [string range $line 0 7]
+ set subj [string range $line 41 end]
+ $list insert end "$abbr $subj\n"
+ }
+ close $fd
+ $list configure -state disabled
+
+ bind $c <Key-v> $gitk
+
+ bind $c <Visibility> "
+ grab $c
+ focus $c.buttons.cancel
+ "
+ bind $c <Key-Return> [list destroy $c]
+ bind $c <Key-Escape> [list destroy $c]
+ tkwait window $c
+ return $reset_ok
+}
+
method _validate {d S} {
if {$d == 1} {
if {[regexp {[~^:?*\[\0- ]} $S]} {
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