GIT_REPOSITORIES/LPP/Users/mperrinel/SciQLop-fork Files · gui/src/DataSource/DataSourceTreeWidgetHelper.cpp

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             DataSourceTreeWidgetHelper.cpp
        
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             / gui / src / DataSource / DataSourceTreeWidgetHelper.cpp
          
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        Alexandre Leroux
    
Creates helper that filters a tree widget according to a filter function

              r476
            
      #include "DataSource/DataSourceTreeWidgetHelper.h"

      #include "DataSource/DataSourceTreeWidgetItem.h"

      namespace {

      bool filterTreeItem(DataSourceTreeWidgetItem &treeItem,

                          DataSourceTreeWidgetHelper::FilterFunction fun, bool parentValid = false)

      {

          auto selfValid = parentValid || fun(treeItem);

          auto childValid = false;

          auto childCount = treeItem.childCount();

          for (auto i = 0; i < childCount; ++i) {

              if (auto childItem = dynamic_cast<DataSourceTreeWidgetItem *>(treeItem.child(i))) {

                  childValid |= filterTreeItem(*childItem, fun, selfValid);

              }

          }

          auto valid = selfValid || childValid;

          treeItem.setHidden(!valid);

          return valid;

      }

      } // namespace

      void DataSourceTreeWidgetHelper::filter(QTreeWidget &treeWidget, FilterFunction fun) noexcept

      {

          auto itemCount = treeWidget.topLevelItemCount();

          for (auto i = 0; i < itemCount; ++i) {

              if (auto item = dynamic_cast<DataSourceTreeWidgetItem *>(treeWidget.topLevelItem(i))) {

                  filterTreeItem(*item, fun);

              }

          }

      }

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Alexandre Leroux Creates helper that filters a tree widget according to a filter function	r476	#include "DataSource/DataSourceTreeWidgetHelper.h"
		#include "DataSource/DataSourceTreeWidgetItem.h"

		namespace {

		bool filterTreeItem(DataSourceTreeWidgetItem &treeItem,
		DataSourceTreeWidgetHelper::FilterFunction fun, bool parentValid = false)
		{
		auto selfValid = parentValid \|\| fun(treeItem);

		auto childValid = false;
		auto childCount = treeItem.childCount();
		for (auto i = 0; i < childCount; ++i) {
		if (auto childItem = dynamic_cast<DataSourceTreeWidgetItem *>(treeItem.child(i))) {
		childValid \|= filterTreeItem(*childItem, fun, selfValid);
		}
		}

		auto valid = selfValid \|\| childValid;

		treeItem.setHidden(!valid);

		return valid;
		}

		} // namespace

		void DataSourceTreeWidgetHelper::filter(QTreeWidget &treeWidget, FilterFunction fun) noexcept
		{
		auto itemCount = treeWidget.topLevelItemCount();
		for (auto i = 0; i < itemCount; ++i) {
		if (auto item = dynamic_cast<DataSourceTreeWidgetItem *>(treeWidget.topLevelItem(i))) {
		filterTreeItem(*item, fun);
		}
		}
		}