Many small refinements to front/backend UI

Changes:
 - Added a friendlyTime helper for nicer timestamps
 - Added validation to most action methods
 - Added error flash to several template files
 - Now making use to c.RenderError() to handle action errors
 - Removed message list slideUp() effect, takes too long
 - Fixed a problem with my vim indentation configuration, so CSS and
   HTML should be indented more consistently.

app/controllers/helpers.go

@@ -0,0 +1,19 @@
+package controllers
+
+import (
+	"github.com/robfig/revel"
+	"html/template"
+	"time"
+)
+
+func init() {
+	rev.TRACE.Println("Registering helpers")
+	rev.Funcs["friendlyTime"] = func(t time.Time) template.HTML {
+		ty, tm, td := t.Date()
+		ny, nm, nd := time.Now().Date()
+		if (ty == ny) && (tm == nm) && (td == nd) {
+			return template.HTML(t.Format("03:04:05 PM"))
+		}
+		return template.HTML(t.Format("Mon Jan 2, 2006"))
+	}
+}

app/controllers/mailbox.go

@@ -10,22 +10,34 @@ type Mailbox struct {
 }
 
 func (c Mailbox) Index(name string) rev.Result {
+	c.Validation.Required(name).Message("Account name is required")
+
+	if c.Validation.HasErrors() {
+		c.Validation.Keep()
+		c.FlashParams()
+		return c.Redirect(Application.Index)
+	}
+
 	return c.Render(name)
 }
 
 func (c Mailbox) List(name string) rev.Result {
+	c.Validation.Required(name).Message("Account name is required")
+
+	if c.Validation.HasErrors() {
+		c.Validation.Keep()
+		c.FlashParams()
+		return c.Redirect(Application.Index)
+	}
+
 	ds := inbucket.NewDataStore()
 	mb, err := ds.MailboxFor(name)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	messages, err := mb.GetMessages()
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	rev.INFO.Printf("Got %v messsages", len(messages))
 
@@ -34,24 +46,27 @@ func (c Mailbox) List(name string) rev.Result {
 }
 
 func (c Mailbox) Show(name string, id string) rev.Result {
+	c.Validation.Required(name).Message("Account name is required")
+	c.Validation.Required(id).Message("Message ID is required")
+
+	if c.Validation.HasErrors() {
+		c.Validation.Keep()
+		c.FlashParams()
+		return c.Redirect(Application.Index)
+	}
+
 	ds := inbucket.NewDataStore()
 	mb, err := ds.MailboxFor(name)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	message, err := mb.GetMessage(id)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	_, body, err := message.ReadBody()
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 
 	c.Response.Out.Header().Set("Expires", "-1")
@@ -59,47 +74,53 @@ func (c Mailbox) Show(name string, id string) rev.Result {
 }
 
 func (c Mailbox) Delete(name string, id string) rev.Result {
+	c.Validation.Required(name).Message("Account name is required")
+	c.Validation.Required(id).Message("Message ID is required")
+
+	if c.Validation.HasErrors() {
+		c.Validation.Keep()
+		c.FlashParams()
+		return c.Redirect(Application.Index)
+	}
+
 	ds := inbucket.NewDataStore()
 	mb, err := ds.MailboxFor(name)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	message, err := mb.GetMessage(id)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	err = message.Delete()
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	return c.RenderText("OK")
 }
 
 func (c Mailbox) Source(name string, id string) rev.Result {
+	c.Validation.Required(name).Message("Account name is required")
+	c.Validation.Required(id).Message("Message ID is required")
+
+	if c.Validation.HasErrors() {
+		c.Validation.Keep()
+		c.FlashParams()
+		return c.Redirect(Application.Index)
+	}
+
 	ds := inbucket.NewDataStore()
 	mb, err := ds.MailboxFor(name)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	message, err := mb.GetMessage(id)
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 	raw, err := message.ReadRaw()
 	if err != nil {
-		rev.ERROR.Printf(err.Error())
+		return c.RenderError(err)
-		c.Flash.Error(err.Error())
-		return c.Redirect(Application.Index)
 	}
 
 	c.Response.Out.Header().Set("Expires", "-1")

app/views/Application/Index.html

@@ -3,6 +3,8 @@
 {{template "menu.html" .}}
 
 <div id="colTwo">
+  {{template "errors.html" .}}
+
   <p>Inbucket is an email testing service; it will accept email for any email
   address and make it available to view without a password.</p>
   <p>To view email for a particular address, enter the username portion

app/views/Mailbox/Index.html

@@ -65,6 +65,8 @@
 </div>
 
 <div id="colTwo">
+  {{template "errors.html" .}}
+
   <div id="emailContent">
     <p>Select a message at left, or enter a different username into the box on upper right.</p>
   </div>

app/views/Mailbox/List.html

@@ -1,9 +1,9 @@
 {{$name := .name}}
 {{range .messages}}
 <div class="box listEntry" id="{{.Id}}">
-	<div class="subject">{{/*<a href="/mailbox/show/{{$name}}/{{.Id}}">*/}}{{.Subject}}</div>
+	<div class="subject">{{.Subject}}</div>
 	<div class="from">{{.From}}</div>
-	<div class="date">{{.Date}}</div>
+	<div class="date">{{friendlyTime .Date}}</div>
 </div>
 {{else}}
 <div class="box">

app/views/errors.html

@@ -0,0 +1,10 @@
+{{if .errors}}
+<div class="errors">
+  <p>Please fix the following errors and resubmit:<p>
+  <ul>
+    {{range .errors}}
+    <li>{{.Message}}</li>
+    {{end}}
+  </ul>
+</div>
+{{end}}

public/stylesheets/main.css

@@ -304,3 +304,10 @@ a:hover {
 #emailActions a:hover {
   background: #becf74;
 }
+
+.errors {
+  background-color: #ffa0a0;
+  color: #333;
+  padding: 5px 10px;
+}
+