dev #48349 : previous / next buttons

library/Class/Version.php

@@ -57,6 +57,16 @@ class Class_Version extends Class_Entity {
   }
 
 
+  public function previous() {
+    return static::getPersistence()->previousOf($this);
+  }
+
+
+  public function next() {
+    return static::getPersistence()->nextOf($this);
+  }
+
+
   public function save() {
     static::getPersistence()->save($this);
   }

library/Class/Version/FilePersistence.php

@@ -77,6 +77,46 @@ class Class_Version_FilePersistence extends Class_Entity {
   }
 
 
+  public function previousOf($version) {
+    if (!$version->getName() || !$version->getKey()
+        || (!$id = $version->getId()))
+      return;
+
+    if (!$all = $this->findAllOf($version))
+      return;
+
+    $found = false;
+    foreach($all as $one) {
+      if ($id == $one->getId()) {
+        $found = true;
+        continue;
+      }
+
+      if ($found)
+        return $one;
+    }
+  }
+
+
+  public function nextOf($version) {
+    if (!$version->getName() || !$version->getKey()
+        || (!$id = $version->getId()))
+      return;
+
+    if (!$all = $this->findAllOf($version))
+      return;
+
+    $found = false;
+    $next = null;
+    foreach($all as $one) {
+      if ($id == $one->getId())
+        return $next;
+
+      $next = $one;
+    }
+  }
+
+
   public function save($version) {
     if (!$version->getName() || !$version->getKey() || !$version->getData())
       return;

library/ZendAfi/View/Helper/Admin/RenderVersionForm.php

@@ -47,6 +47,53 @@ class ZendAfi_View_Helper_Admin_RenderVersionForm
   protected function _buttonsFor($form, $buttons) {
     return $this
       ->_renderDefaultButtons($form,
-                              [$this->view->Button_Back($this->_getBackUrl($form))]);
+                              [$this->_prevButton(),
+                               $this->_nextButton(),
+                               $this->_listButton($form)]);
+  }
+
+
+  protected function _prevButton() {
+    $back = (new Class_Entity())
+      ->setText($this->_('Précédente'))
+      ->setAttribs(['disabled' => 'disabled',
+                    'title' => $this->_('Pas de version précédente')]);
+
+    if ($previous = $this->_version->previous())
+      $back
+        ->setUrl($this->view->url(['key' => $previous->getId()]))
+        ->setAttribs([]);
+
+    return $this->view->Button_Back($back);
+  }
+
+
+  protected function _nextButton() {
+    $forward = (new Class_Entity())
+      ->setText($this->_('Suivante'))
+      ->setImage($this->view->tagImg(Class_Admin_Skin::current()
+                                     ->renderIconUrlOn('buttons',
+                                                       'back'),
+                                     ['style' => 'transform: scaleX(-1);']))
+      ->setAttribs(['disabled' => 'disabled',
+                    'title' => $this->_('Pas de version suivante')]);
+
+    if ($next = $this->_version->next())
+      $forward
+        ->setUrl($this->view->url(['key' => $next->getId()]))
+        ->setAttribs([]);
+
+    return $this->view->Button($forward);
+  }
+
+
+  protected function _listButton($form) {
+    return $this->view
+      ->Button($this->_getBackUrl($form)
+               ->setText($this->_('Liste complète'))
+               ->setImage($this->view->tagImg(Class_Admin_Skin::current()
+                                              ->renderIconUrlOn('actions',
+                                                                'liste'),
+                                              ['style' => 'filter: invert();'])));
   }
 }
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