From fbe9aea7d13d68e914262584e6228ef177c695c5 Mon Sep 17 00:00:00 2001
From: ncyellow <ncyellow@yandex.ru>
Date: Wed, 27 Mar 2019 23:40:54 +0300
Subject: [PATCH] Xrefs select top item (#1401)

* closes #1363
select top item from refs or xrefs
---
 src/common/Helpers.cpp      | 14 ++++++++++++++
 src/common/Helpers.h        |  2 +-
 src/dialogs/XrefsDialog.cpp |  6 ++++++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/common/Helpers.cpp b/src/common/Helpers.cpp
index 577a166d..f94b9455 100644
--- a/src/common/Helpers.cpp
+++ b/src/common/Helpers.cpp
@@ -72,6 +72,20 @@ QTreeWidgetItem *appendRow(QTreeWidget *tw, const QString &str, const QString &s
     return tempItem;
 }
 
+/**
+ * @brief select first item of QTreeWidget if tree is not empty.
+ * @param tw - QTreeWidget instance
+ * @return true - setCurrentItem was set, false - tree is empty
+ */
+bool selectFirstItem(QTreeWidget* tw)
+{
+    if (tw->topLevelItem(0)) {
+        tw->setCurrentItem(tw->topLevelItem(0));
+        return true;
+    }
+    return false;
+}
+
 void setVerticalScrollMode(QAbstractItemView *tw)
 {
     tw->setVerticalScrollMode(scrollMode());
diff --git a/src/common/Helpers.h b/src/common/Helpers.h
index 0ecebe9c..b6a48994 100644
--- a/src/common/Helpers.h
+++ b/src/common/Helpers.h
@@ -19,7 +19,7 @@ namespace qhelpers {
 QString formatBytecount(const long bytecount);
 void adjustColumns(QTreeView *tv, int columnCount, int padding);
 void adjustColumns(QTreeWidget *tw, int padding);
-
+bool selectFirstItem(QTreeWidget* tw);
 QTreeWidgetItem *appendRow(QTreeWidget *tw, const QString &str, const QString &str2 = QString(),
                            const QString &str3 = QString(), const QString &str4 = QString(), const QString &str5 = QString());
 
diff --git a/src/dialogs/XrefsDialog.cpp b/src/dialogs/XrefsDialog.cpp
index 4821076c..53129a8b 100644
--- a/src/dialogs/XrefsDialog.cpp
+++ b/src/dialogs/XrefsDialog.cpp
@@ -64,6 +64,12 @@ void XrefsDialog::fillRefs(QList<XrefDescription> refs, QList<XrefDescription> x
 
     // Adjust columns to content
     qhelpers::adjustColumns(ui->toTreeWidget, 0);
+
+    // try to select first item from refs or xrefs
+    if (!qhelpers::selectFirstItem(ui->toTreeWidget)) {
+        qhelpers::selectFirstItem(ui->fromTreeWidget);
+    }
+
 }
 
 void XrefsDialog::on_fromTreeWidget_itemDoubleClicked(QTreeWidgetItem *item, int column)