From 5d9356a90a800393af67f46f85d4e5316b132a5d Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Tue, 17 Jan 2017 11:32:50 +0000
Subject: [PATCH] List constrained requests when selecting a constraint.

---
 CHANGELOG.md           |  2 ++
 src/describescreen.cpp | 29 +++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ea546b..bf4173f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,8 @@ New sketch features:
 New constraint features:
   * When dragging an arc or rectangle point, it will be automatically
     constrained to other points with a click.
+  * When selecting a constraint, the requests it constraints can be selected
+    in the text window.
 
 New export/import features:
   * Three.js: allow configuring projection for exported model, and initially
diff --git a/src/describescreen.cpp b/src/describescreen.cpp
index 46670ae..2d2a801 100644
--- a/src/describescreen.cpp
+++ b/src/describescreen.cpp
@@ -341,6 +341,35 @@ void TextWindow::DescribeSelection() {
             Printf(false, "%FtSELECTED:%E %s",
             c->DescriptionString().c_str());
         }
+
+        std::vector<hEntity> lhe = {};
+        lhe.push_back(c->ptA);
+        lhe.push_back(c->ptB);
+        lhe.push_back(c->entityA);
+        lhe.push_back(c->entityB);
+        lhe.push_back(c->entityC);
+        lhe.push_back(c->entityD);
+
+        auto it = std::remove_if(lhe.begin(), lhe.end(),
+            [](hEntity he) {
+                return he.v == Entity::NO_ENTITY.v || !he.isFromRequest();
+            });
+        lhe.erase(it, lhe.end());
+
+        if(!lhe.empty()) {
+            Printf(true, "%FtCONSTRAINED REQUESTS:%E");
+
+            int a = 0;
+            for(hEntity he : lhe) {
+                Request *r = SK.GetRequest(he.request());
+                std::string s = r->DescriptionString();
+                Printf(false, "%Bp   %Fl%Ll%D%f%h%s%E",
+                    (a & 1) ? 'd' : 'a',
+                    r->h.v, (&TextWindow::ScreenSelectRequest),
+                    &(TextWindow::ScreenHoverRequest), s.c_str());
+                a++;
+            }
+        }
     } else {
         int n = SS.GW.selection.n;
         Printf(false, "%FtSELECTED:%E %d item%s", n, n == 1 ? "" : "s");