Enable soft livereload of CSS and images

Prior to this commit a dummy JavaScript filename was sent to LiveReload when changing a static file (CSS, image etc.), forcing a full browser reload of the page.

This commit fixes this by sending the relative file path of the changed static resource, enabling partial live reloading for CSS- and image-changes. If more than one static file happens to end up in the same changeevent-batch, it will fall back to do a full refresh. To enable this logic, the change events with names ending with ".goutputstream*" is now filtered out as temporary.

Changes in dynamic content behaves like before.

Issue #490
This commit is contained in:
bep 2014-09-10 12:21:22 +02:00 committed by spf13
parent 0099b5a3cb
commit df489b4712
4 changed files with 65 additions and 3 deletions

View file

@ -312,10 +312,11 @@ func NewWatcher(port int) error {
static_changed := false
dynamic_changed := false
static_files_changed := make(map[string]bool)
for _, ev := range evs {
ext := filepath.Ext(ev.Name)
istemp := strings.HasSuffix(ext, "~") || (ext == ".swp") || (ext == ".tmp")
istemp := strings.HasSuffix(ext, "~") || (ext == ".swp") || (ext == ".tmp") || (strings.HasPrefix(ext, ".goutputstream"))
if istemp {
continue
}
@ -328,6 +329,12 @@ func NewWatcher(port int) error {
static_changed = static_changed || isstatic
dynamic_changed = dynamic_changed || !isstatic
if isstatic {
if staticPath, err := helpers.MakeStaticPathRelative(ev.Name); err == nil {
static_files_changed[staticPath] = true
}
}
// add new directory to watch list
if s, err := os.Stat(ev.Name); err == nil && s.Mode().IsDir() {
if ev.IsCreate() {
@ -342,7 +349,16 @@ func NewWatcher(port int) error {
if !viper.GetBool("DisableLiveReload") {
// Will block forever trying to write to a channel that nobody is reading if livereload isn't initalized
livereload.ForceRefresh()
// force refresh when more than one file
if len(static_files_changed) == 1 {
for path := range static_files_changed {
livereload.RefreshPath(path)
}
} else {
livereload.ForceRefresh()
}
}
}

View file

@ -122,3 +122,26 @@ func TestMakePermalink(t *testing.T) {
}
}
}
func TestMakePathRelative(t *testing.T) {
type test struct {
inPath, path1, path2, output string
}
data := []test{
{"/abc/bcd/ab.css", "/abc/bcd", "/bbc/bcd", "/ab.css"},
{"/abc/bcd/ab.css", "/abcd/bcd", "/abc/bcd", "/ab.css"},
}
for i, d := range data {
output, _ := MakePathRelative(d.inPath, d.path1, d.path2)
if d.output != output {
t.Errorf("Test #%d failed. Expected %q got %q", i, d.output, output)
}
}
_, error := MakePathRelative("a/b/c.ss", "/a/c", "/d/c", "/e/f")
if error == nil {
t.Errorf("Test #%d failed. Expected error")
}
}

View file

@ -14,6 +14,7 @@
package helpers
import (
"errors"
"fmt"
"io"
"os"
@ -130,6 +131,23 @@ func AbsPathify(inPath string) string {
return filepath.Clean(filepath.Join(viper.GetString("WorkingDir"), inPath))
}
func MakeStaticPathRelative(inPath string) (string, error) {
staticDir := AbsPathify(viper.GetString("StaticDir"))
themeStaticDir := AbsPathify("themes/"+viper.GetString("theme")) + "/static/"
return MakePathRelative(inPath, staticDir, themeStaticDir)
}
func MakePathRelative(inPath string, possibleDirectories ...string) (string, error) {
for _, currentPath := range possibleDirectories {
if strings.HasPrefix(inPath, currentPath) {
return strings.TrimPrefix(inPath, currentPath), nil
}
}
return inPath, errors.New("Can't extract relative path, unknown prefix")
}
func Filename(in string) (name string) {
name, _ = FileAndExt(in)
return

View file

@ -39,7 +39,12 @@ func Initialize() {
func ForceRefresh() {
// Tell livereload a js file changed to force a hard refresh
wsHub.broadcast <- []byte(`{"command":"reload","path":"/x.js","originalPath":"","liveCSS":true}`)
RefreshPath("/x.js")
}
func RefreshPath(s string) {
// Tell livereload a file has changed - will force a hard refresh if not CSS or an image
wsHub.broadcast <- []byte(`{"command":"reload","path":"` + s + "\"" + `,"originalPath":"","liveCSS":true,"liveImg":true}`)
}
func ServeJS(w http.ResponseWriter, r *http.Request) {