N°2847 - Work on the ActivityPanel and PopoverMenu features

- Deprecate cmdbAbstractObject::DisplayBareHistory() as history will be replace by ActivityPanel
- Rename illustrations to original filenames to find source more easily
- Remove unused "max_history_case_log_entry_length" config. parameter
- Activity panel: Introduce iCMDBChangeOp and iCMDBChangeOpSetAttribute interface for better dependency injection
- Activity panel: Add placeholder when no entry
- Activity panel: Fix tab toolbar icons color
- Activity panel: Add history entries (entries after the first 50 are not loaded yet)
- Popover menu: Fix no border-radius on first/last entries hover

core/cmdbchangeop.class.inc.php

@@ -31,7 +31,22 @@
  * @package     iTopORM
  */
 
-class CMDBChangeOp extends DBObject
+/**
+ * Interface iCMDBChangeOp
+ *
+ * @since 2.8.0
+ */
+interface iCMDBChangeOp
+{
+	/**
+	 * Describe (as a text string) the modifications corresponding to this change
+	 *
+	 * @return string
+	 */
+	public function GetDescription();
+}
+
+class CMDBChangeOp extends DBObject implements iCMDBChangeOp
 {
 	public static function Init()
 	{
@@ -156,13 +171,22 @@ class CMDBChangeOpDelete extends CMDBChangeOp
 	}
 }
 
+/**
+ * Interface iCMDBChangeOpSetAttribute
+ *
+ * @since 2.8.0
+ */
+interface iCMDBChangeOpSetAttribute
+{
+
+}
 
 /**
  * Record the modification of an attribute (abstract)
  *
  * @package     iTopORM
  */
-class CMDBChangeOpSetAttribute extends CMDBChangeOp
+class CMDBChangeOpSetAttribute extends CMDBChangeOp implements iCMDBChangeOpSetAttribute
 {
 	public static function Init()
 	{
@@ -799,7 +823,6 @@ class CMDBChangeOpSetAttributeCaseLog extends CMDBChangeOpSetAttribute
 			}
 			$oObj = $oMonoObjectSet->Fetch();
 			$oCaseLog = $oObj->Get($this->Get('attcode'));
-			$iMaxVisibleLength = MetaModel::getConfig()->Get('max_history_case_log_entry_length', 0);
 			$sTextEntry = '<div class="history_entry history_entry_truncated"><div class="history_html_content">'.$oCaseLog->GetEntryAt($this->Get('lastentry')).'</div></div>';
 
 			$sResult = Dict::Format('Change:AttName_EntryAdded', $sAttName, $sTextEntry);

core/config.class.inc.php

@@ -967,15 +967,6 @@ class Config
 			'source_of_value' => '',
 			'show_in_conf_sample' => false,
 		),
-		'max_history_case_log_entry_length' => array(
-			'type' => 'integer',
-			'description' => 'The length (in number of characters) at which to truncate the (expandable) display (in the history) of a case log entry. If zero, the display in the history is not truncated.',
-			// examples... not used
-			'default' => 60,
-			'value' => 60,
-			'source_of_value' => '',
-			'show_in_conf_sample' => false,
-		),
 		'full_text_chunk_duration' => array(
 			'type' => 'integer',
 			'description' => 'Delay after which the results are displayed.',