[PATCH 2/6] Add ability to follow a remote branch with a dialog

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A suggested name is provided when creating a new "following" branch.

Signed-off-by: Pierre Dumuid <pmdumuid@xxxxxxxxx>
---
 gitk | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 82 insertions(+), 4 deletions(-)

diff --git a/gitk b/gitk
index 50d1ef4..36cba49 100755
--- a/gitk
+++ b/gitk
@@ -2673,6 +2673,7 @@ proc makewindow {} {
 	{mc "Rename this branch" command mvbranch}
 	{mc "Remove this branch" command rmbranch}
 	{mc "Copy branch name" command {clipboard clear; clipboard append $headmenuhead}}
+	{mc "Follow this branch"  command follow_remote_branch_dialog}
     }
     $headctxmenu configure -tearoff 0
 
@@ -9947,23 +9948,100 @@ proc headmenu {x y id head} {
     stopfinding
     set headmenuid $id
     set headmenuhead $head
-    array set state {0 normal 1 normal 2 normal}
+    array set state {0 normal 1 normal 2 normal 3 normal}
     if {[string match "remotes/*" $head]} {
 	set localhead [string range $head [expr [string last / $head] + 1] end]
 	if {[info exists headids($localhead)]} {
 	    set state(0) disabled
 	}
-	array set state {1 disabled 2 disabled}
+	array set state {1 disabled 2 disabled 3 normal}
     }
     if {$head eq $mainhead} {
-	array set state {0 disabled 2 disabled}
+	array set state {0 disabled 2 disabled 3 disabled}
+    } else {
+	set state(3) disabled
     }
-    foreach i {0 1 2} {
+    foreach i {0 1 2 3} {
 	$headctxmenu entryconfigure $i -state $state($i)
     }
     tk_popup $headctxmenu $x $y
 }
 
+proc follow_remote_branch_dialog {} {
+    global headmenuhead NS
+
+    # check the tree is clean first??
+    nowbusy createFollowingBranch [mc "Creating following branch"]
+    update
+    dohidelocalchanges
+
+    set top .create_following_branch
+    catch {destroy $top}
+    ttk_toplevel $top
+    make_transient $top .
+
+    ${NS}::label $top.title -text [mc "Create following branch"]
+    grid $top.title - -pady 10
+
+    ${NS}::label $top.remote_branch_name_label -text [mc "Remote Branch:"]
+    ${NS}::entry $top.remote_branch_name -width 40
+    $top.remote_branch_name insert 0 $headmenuhead
+    $top.remote_branch_name conf -state readonly
+    grid $top.remote_branch_name_label $top.remote_branch_name -sticky w
+
+    ${NS}::label $top.new_branch_name_label -text [mc "Name:"]
+    ${NS}::entry $top.new_branch_name -width 40
+    set suggested_name $headmenuhead
+    regsub {^remotes/[^/]*/} $suggested_name {} suggested_name
+    $top.new_branch_name insert 0 $suggested_name
+    grid $top.new_branch_name_label $top.new_branch_name -sticky w
+
+    set actionCreate [list follow_remote_branch_callback $top]
+    set actionCancel "catch {notbusy createFollowingBranch; destroy $top}"
+
+    ${NS}::frame $top.buts
+    ${NS}::button $top.buts.go  -text [mc "Create"] -command $actionCreate
+    ${NS}::button $top.buts.can -text [mc "Cancel"] -command $actionCancel
+    grid $top.buts.go $top.buts.can
+    grid columnconfigure $top.buts 0 -weight 1 -uniform a
+    grid columnconfigure $top.buts 1 -weight 1 -uniform a
+    grid $top.buts - -pady 10 -sticky ew
+
+    bind $top <Key-Return> $actionCreate
+    bind $top <Key-Escape> $actionCancel
+
+    focus $top.new_branch_name
+}
+
+proc follow_remote_branch_callback {top} {
+    global headids idheads NS
+    set new_branch_name    [$top.new_branch_name get]
+    set remote_branch_name [$top.remote_branch_name get]
+    set cmdargs {}
+
+    if {$new_branch_name eq {}} {
+	error_popup [mc "Please specify a name for the new branch"] $top
+	return
+    }
+    if {[info exists headids($new_branch_name)]} {
+	error_popup [mc "The branch name you specified already exists, please specify a new name"] $top
+	return
+    }
+    catch {destroy $top}
+
+    lappend cmdargs $new_branch_name $remote_branch_name
+
+    if {[catch {
+	eval exec git branch --track $cmdargs
+    } err]} {
+	notbusy createFollowingBranch
+	error_popup $err
+    } else {
+	notbusy createFollowingBranch
+	updatecommits
+    }
+}
+
 proc cobranch {} {
     global headmenuid headmenuhead headids
     global showlocalchanges
-- 
2.10.2




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