From 58179758af3a5a6e4875bdc40fd35c05481d2413 Mon Sep 17 00:00:00 2001
From: mfranz <mfranz>
Date: Fri, 21 Oct 2005 17:47:48 +0000
Subject: [PATCH] add support for a <hide> property, which hides whole XML
 groups (widgets or data blocks) from layouter and dialog creator. This is
 required for dynamically generated/modified dialogs. Parts in the XML file
 can be hidden and turned on by the C++ code. Other hidden parts can be used
 as templates that are multiply used. Hidden datablocks can contain strings
 that are used in dialog context, that are easier to translate or modify in
 the XML file.

---
 src/GUI/dialog.cxx |  3 +++
 src/GUI/layout.cxx | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/GUI/dialog.cxx b/src/GUI/dialog.cxx
index 722fab29f..7d1475bb9 100644
--- a/src/GUI/dialog.cxx
+++ b/src/GUI/dialog.cxx
@@ -406,6 +406,9 @@ FGDialog::display (SGPropertyNode * props)
 puObject *
 FGDialog::makeObject (SGPropertyNode * props, int parentWidth, int parentHeight)
 {
+    if (props->getBoolValue("hide"))
+        return 0;
+
     bool presetSize = props->hasValue("width") && props->hasValue("height");
     int width = props->getIntValue("width", parentWidth);
     int height = props->getIntValue("height", parentHeight);
diff --git a/src/GUI/layout.cxx b/src/GUI/layout.cxx
index 6783187db..b887894cc 100644
--- a/src/GUI/layout.cxx
+++ b/src/GUI/layout.cxx
@@ -39,6 +39,9 @@ void LayoutWidget::calcPrefSize(int* w, int* h)
 {
     *w = *h = 0; // Ask for nothing by default
 
+    if (getBool("hide"))
+        return;
+
     int legw = stringLength(getStr("legend"));
     int labw = stringLength(getStr("label"));
 
@@ -94,6 +97,9 @@ void LayoutWidget::calcPrefSize(int* w, int* h)
 // Set up geometry such that the widget lives "inside" the specified 
 void LayoutWidget::layout(int x, int y, int w, int h)
 {
+    if (getBool("hide"))
+        return;
+
     setNum("__bx", x);
     setNum("__by", y);
     setNum("__bw", w);
@@ -192,6 +198,9 @@ void LayoutWidget::doHVBox(bool doLayout, bool vertical, int* w, int* h)
     int nEq = 0, eqA = 0, eqB = 0, eqTotalA = 0;
     for(i=0; i<nc; i++) {
         LayoutWidget child = getChild(i);
+        if (child.getBool("hide"))
+            continue;
+
         int a, b;
         child.calcPrefSize(vertical ? &b : &a, vertical ? &a : &b);
         if(doLayout) prefA[i] = a;
@@ -227,6 +236,9 @@ void LayoutWidget::doHVBox(bool doLayout, bool vertical, int* w, int* h)
         // from top to bottom instead of along the cartesian Y axis.
         int idx = vertical ? (nc-i-1) : i;
         LayoutWidget child = getChild(idx);
+        if (child.getBool("hide"))
+            continue;
+
         if(child.getBool("equal")) {
             int pad = child.padding();
             prefA[idx] = eqA + 2*pad;
-- 
2.39.5