Add support for custom configuration of what Fieldtype/Inputfield settings may be overridden for field/template context. Appears only in $config->advanced mode. You can see it when editing a field (ProcessField) on the "Overrides" tab. Related to processwire/processwire-requests#145

wire/core/Field.php

@@ -31,6 +31,7 @@
  * @property array $viewRoles Role IDs with view access, applicable only if access control is enabled. #pw-group-access
  * @property array|null $orderByCols Columns that WireArray values are sorted by (default=null), Example: "sort" or "-created". #pw-internal
  * @property int|null $paginationLimit Used by paginated WireArray values to indicate limit to use during load. #pw-internal
+ * @property array $allowContexts Names of settings that are custom configured to be allowed for context. #pw-group-properties
  *
  * Common Inputfield properties that Field objects store:  
  * @property int|bool|null $required Whether or not this field is required during input #pw-group-properties
@@ -351,6 +352,7 @@ class Field extends WireData implements Saveable, Exportable {
 			else if($key == 'flags') return $this->settings['flags'];
 
 		$value = parent::get($key);
+		if($key === 'allowContexts' && !is_array($value)) $value = array();
 		if(is_array($this->trackGets)) $this->trackGets($key);
 		return $value;
 	}
@@ -916,6 +918,7 @@ class Field extends WireData implements Saveable, Exportable {
 		if($fieldgroupContext) {
 			$allowContext = $this->type->getConfigAllowContext($this); 
 			if(!is_array($allowContext)) $allowContext = array();
+			$allowContext = array_merge($allowContext, $this->allowContexts); 
 		} else {
 			$allowContext = array();
 		}
@@ -926,6 +929,8 @@ class Field extends WireData implements Saveable, Exportable {
 			if(!$fieldgroupContext) $inputfields->head = $this->_('Field type details');
 			$inputfields->attr('title', $this->_('Details'));
 			$inputfields->attr('id+name', 'fieldtypeConfig');
+			$remainingNames = array();
+			foreach($allowContext as $name) $remainingNames[$name] = $name;
 
 			try {
 				$fieldtypeInputfields = $this->type->getConfigInputfields($this); 
@@ -940,7 +945,19 @@ class Field extends WireData implements Saveable, Exportable {
 				foreach($fieldtypeInputfields as $inputfield) {
 					if($fieldgroupContext && !in_array($inputfield->name, $allowContext)) continue;
 					$inputfields->append($inputfield);
+					unset($remainingNames[$inputfield->name]);
 				}
+				// now capture those that may have been stuck in a fieldset
+				if($fieldgroupContext) {
+					foreach($remainingNames as $name) {
+						if($inputfields->getChildByName($name)) continue;
+						$inputfield = $fieldtypeInputfields->getChildByName($name);
+						if(!$inputfield) continue;
+						$inputfields->append($inputfield);
+						unset($remainingNames[$inputfield->name]);
+					}
+				}
+				
 			} catch(\Exception $e) {
 				$this->trackException($e, false, true); 
 			}
@@ -955,11 +972,15 @@ class Field extends WireData implements Saveable, Exportable {
 		if($inputfield) {
 			if($fieldgroupContext) {
 				$allowContext = array('visibility', 'collapsed', 'columnWidth', 'required', 'requiredIf', 'showIf');
-				$allowContext = array_merge($allowContext, $inputfield->getConfigAllowContext($this)); 
+				$allowContext = array_merge($allowContext, $this->allowContexts, $inputfield->getConfigAllowContext($this)); 
 			} else {
 				$allowContext = array();
 				$inputfields->head = $this->_('Input field settings');
 			}
+			$remainingNames = array();
+			foreach($allowContext as $name) {
+				$remainingNames[$name] = $name;
+			}
 			$inputfields->attr('title', $this->_('Input')); 
 			$inputfields->attr('id+name', 'inputfieldConfig');
 			$inputfieldInputfields = $inputfield->getConfigInputfields();
@@ -974,6 +995,16 @@ class Field extends WireData implements Saveable, Exportable {
 			foreach($inputfieldInputfields as $i) { 
 				if($fieldgroupContext && !in_array($i->name, $allowContext)) continue; 
 				$inputfields->append($i); 
+				unset($remainingNames[$i->name]); 
+			}
+			if($fieldgroupContext) {
+				foreach($remainingNames as $name) {
+					if($inputfields->getChildByName($name)) continue;
+					$inputfield = $inputfieldInputfields->getChildByName($name);
+					if(!$inputfield) continue;
+					$inputfields->append($inputfield);
+					unset($remainingNames[$inputfield->name]);
+				}
 			}
 		}
 

wire/modules/Process/ProcessField/ProcessField.module

@@ -911,7 +911,8 @@ class ProcessField extends Process implements ConfigurableModule {
 			if(!$fieldgroup->hasFieldContext($field->name, $this->contextNamespace)) continue; 	
 			$allChanges[$fieldgroup->name] = $this->getContextChanges($form, $field, $fieldgroup);
 		}
-		if(!count($allChanges)) return;
+		
+		if(!count($allChanges) && !$this->wire('config')->advanced) return;
 		
 		$tab = $this->wire(new InputfieldWrapper());
 		$tab->attr('title', $this->_('Overrides'));
@@ -933,6 +934,7 @@ class ProcessField extends Process implements ConfigurableModule {
 		}
 		$tab->add($f);
 
+		if(count($allChanges)) {
 			/** @var MarkupAdminDataTable $table */
 			$table = $this->wire('modules')->get('MarkupAdminDataTable');
 			$table->setEncodeEntities(false);
@@ -942,7 +944,7 @@ class ProcessField extends Process implements ConfigurableModule {
 			$header[] = $this->_x('Setting', 'context-thead');
 			$header[] = $this->_x('Original', 'context-thead');
 			$header[] = $this->_x('Override', 'context-thead');
-		$header[] = "<i class='fa fa-trash-o override-select-all'></i>";
+			$header[] = "<i class='fa fa-fw fa-lg fa-trash override-select-all'></i>";
 			$table->headerRow($header);
 
 			$sanitizer = $this->wire('sanitizer');
@@ -969,6 +971,79 @@ class ProcessField extends Process implements ConfigurableModule {
 			}
 
 			$f->value = $table->render();
+		} else {
+			$f->value = '<p>' . $this->_('There are currently no settings being overridden by template.') . '</p>';
+			$f->collapsed = Inputfield::collapsedYes;
+		}
+	
+		// allow the following configuration only for advanced mode
+		if(!$this->wire('config')->advanced) return;
+		
+		/** @var InputfieldCheckboxes $field */
+		$field = $this->modules->get('InputfieldCheckboxes');
+		$field->attr('name', 'allowContexts');
+		$field->label = $this->_('Allowed overrides');
+		$field->icon = 'sliders';
+		$field->description =
+			$this->_('Checked settings will appear as configuration options when editing this field within the context of a particular template.') . ' ' .
+			$this->_('**Warning:** doing this for settings beyond those specified by the module author may not always work, or may cause problems.');
+		$field->table = true;
+		$field->thead =
+			$this->_('Label') . '|' .
+			$this->_('Name') . '|' .
+			$this->_('Type');
+
+		$tabNames = array(
+			'fieldtypeConfig' => $this->_('Details:'),
+			'inputfieldConfig' => $this->_('Input:')
+		);
+		$exclusions = array(
+			'collapsed',
+			'showIf',
+			'required',
+			'requiredIf',
+			'columnWidth',
+			'visibility',
+			'themeOffset',
+			'themeBorder',
+			'themeColor',
+		);
+
+		$fieldtypeNames = $this->field->type->getConfigAllowContext($this->field);
+		if(!is_array($fieldtypeNames)) $fieldtypeNames = array();
+		$dummyPage = $this->wire('pages')->get("/"); // only using this to satisfy param requirement 
+		$inputfieldNames = $this->field->getInputfield($dummyPage)->getConfigAllowContext($this->field);
+		if(!is_array($inputfieldNames)) $inputfieldNames = array();
+		$alwaysSelected = array_merge($fieldtypeNames, $inputfieldNames);
+		$allowContexts = $this->field->get('allowContexts');
+		$alwaysSelected = array_diff($alwaysSelected, $allowContexts);
+		$qty = 0;
+
+		foreach($tabNames as $tabName => $tabLabel) {
+			/** @var InputfieldWrapper $tabInputfield */
+			$tabInputfield = $form->getChildByName($tabName);
+			if(!$tabInputfield) continue;
+			foreach($tabInputfield->getAll() as $f) {
+				$name = $f->name;
+				if(strpos($name, '_') === 0) continue;
+				if(in_array($name, $exclusions)) continue;
+				if($f instanceof InputfieldWrapper || $f instanceof InputfieldMarkup || $f instanceof InputfieldHidden) continue;
+				$typeName = str_replace('Inputfield', '', $f->className());
+				$label = str_replace('|', ' ', "$tabLabel $f->label") .
+					"| [span.detail] $name [/span] " .
+					"| [span.detail] $typeName [/span]";
+				if(in_array($name, $alwaysSelected)) {
+					$field->addOption($name, $label, array('checked' => 'checked', 'disabled' => 'disabled'));
+					$allowContexts[] = $name;
+				} else {
+					$field->addOption($name, $label);
+					$qty++;
+				}
+			}
+		}
+		
+		$field->attr('value', $allowContexts);
+		if($qty) $tab->append($field);
 	}
 
 	/*