Rewrote attributes handling in Filters; Closes #434

src/Filter/Filter.php

@@ -71,7 +71,7 @@ abstract class Filter extends Nette\Object
 	 * @var array
 	 */
 	protected $attributes = [
-		['class', 'form-control input-sm']
+		'class' => ['form-control', 'input-sm'],
 	];
 
 
@@ -255,7 +255,20 @@ public function getType()
 	 */
 	public function addAttribute($name, $value)
 	{
-		$this->attributes[] = [(string) $name, $value];
+		$this->attributes[$name][] = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @param string $name
+	 * @param mixed $value
+	 * @return static
+	 */
+	public function setAttribute($name, $value)
+	{
+		$this->attributes[$name] = (array) $value;
 
 		return $this;
 	}
@@ -271,6 +284,10 @@ public function getAttribtues()
 		return $this->getAttributes();
 	}
 
+
+	/**
+	 * @return array
+	 */
 	public function getAttributes()
 	{
 		return $this->attributes;
@@ -289,8 +306,13 @@ protected function addAttributes($input)
 			$input->setAttribute('data-datagrid-manualsubmit', TRUE);
 		}
 
-		foreach ($this->attributes as $attribute) {
-			$input->setAttribute($attribute[0], $attribute[1]);
+		foreach ($this->attributes as $key => $value) {
+			if (is_array($value)) {
+				$value = array_unique($value);
+				$value = implode(' ', $value);
+			}
+
+			$input->setAttribute($key, $value);
 		}
 
 		return $input;

src/Filter/FilterDate.php

@@ -28,13 +28,6 @@ class FilterDate extends Filter implements IFilterDate
 	 */
 	protected $type = 'date';
 
-	/**
-	 * @var array
-	 */
-	protected $attributes = [
-		['class', 'form-control input-sm']
-	];
-
 
 	/**
 	 * Adds select box to filter form

src/Filter/FilterDateRange.php

@@ -28,13 +28,6 @@ class FilterDateRange extends FilterRange implements IFilterDate
 	 */
 	protected $type = 'date-range';
 
-	/**
-	 * @var array
-	 */
-	protected $attributes = [
-		['class', 'form-control input-sm']
-	];
-
 
 	/**
 	 * Adds select box to filter form

src/Filter/FilterMultiSelect.php

@@ -23,8 +23,8 @@ class FilterMultiSelect extends FilterSelect
 	 * @var array
 	 */
 	protected $attributes = [
-		['class', 'form-control selectpicker input-sm'],
-		['data-selected-text-format', 'count']
+		'class' => ['form-control', 'input-sm', 'selectpicker'],
+		'data-selected-text-format' => ['count'],
 	];