update ws_treenode_remove_node, add printing util function

src/util.c

@@ -2,6 +2,7 @@
 #include "wm.h"
 #include <json-c/json_object.h>
 #include <json-c/json_tokener.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -156,6 +157,13 @@ char* wm_treenode_to_str(TreeNode *node)
     return ret;
 }
 
+void wm_treenode_print(TreeNode *node)
+{
+    char *str = wm_treenode_to_str(node);
+    DEBUG_PRINT("%s\n", str);
+    free(str);
+}
+
 void wm_tree_to_DOT(TreeNode *root, const char *filename)
 {
     DEBUG_PRINT("%s\n", __func__);
@@ -216,23 +224,73 @@ int wm_get_node_index(TreeNode *parent, unsigned int node_id)
     return -1;
 }
 
-void wm_treenode_remove_node(TreeNode *root, unsigned int node_id)
+void wm_treenode_remove_node(Wm *wm, TreeNode *root, TreeNode *node)
 {
     DEBUG_PRINT("%s\n", __func__);
-    assert(root);
 
-    PtrArray all_nodes = wm_all_nodes_to_ptrarray(root);
+    wm_tree_to_DOT(root, "wm_output.dot");
+
+    assert(node);
 
-    for (size_t i = 0; i < all_nodes.size; i++) {
-        TreeNode *node = all_nodes.ptrs[i];
-        if (node->id == node_id) {
     TreeNode *parent = node->parent;
-            int index = wm_get_node_index(parent, node_id);
-            assert(index >= 0);
 
-            wm_nodearray_remove(&parent->children, index);
+    if (node->parent == NULL) {
+        node->client = NULL;
+        return;
+    }
+
+    for (size_t i = 0; i < parent->children.size; i++) {
+        if (parent->children.nodes[i]->type == NODE_CLIENT &&
+            parent->children.nodes[i] != node) {
+
+            parent->type = NODE_CLIENT;
+            parent->client = parent->children.nodes[i]->client;
+            wm_treenode_free(node);
+            wm_treenode_free(parent->children.nodes[i]);
+            wm_nodearray_clear(&parent->children);
+            return;
         }
     }
+
+    DEBUG_PRINT("%s: other_client was NULL!\n", __func__);
+
+    TreeNode *sibling_node = wm_treenode_split_get_sibling(node);
+    wm_treenode_free(node);
+
+    // wm_nodearray_free(&node->children);
+
+    // TODO
+    size_t dock_y = 0;
+
+    if (parent->parent == NULL) {
+        // parent is root node
+        DEBUG_PRINT("parent is root node!\n");
+        sibling_node->parent = NULL;
+        assert(node->type == NODE_CLIENT);
+        node->client->ws->tree = sibling_node;
+
+        node->client->ws->tree->pos = (Rect) {
+            .x = wm->config.border_width, .y = wm->config.border_width + dock_y ,
+            .w = node->client->ws->monitor->info.width - wm->config.border_width*2,
+            .h = node->client->ws->monitor->info.height - wm->config.border_width*2 - dock_y,
+        };
+
+        assert(node->client->ws->tree->children.size == 2);
+        wm_treenode_split_space(node->client->ws->tree, &node->client->ws->tree->children.nodes[0]->pos,
+                                &node->client->ws->tree->children.nodes[1]->pos);
+    } else {
+        sibling_node->parent = parent->parent;
+        *parent = *sibling_node;
+
+        for (size_t i = 0; i < parent->children.size; i++) {
+            parent->children.nodes[i]->parent = parent;
+        }
+
+        wm_treenode_recalculate_space(parent->parent);
+        wm_treenode_recalculate_space(parent);
+    }
+
+    assert(node->client->ws->tree->children.size >= 1);
 }
 
 TreeNode* wm_treenode_split_get_sibling(TreeNode *node)
@@ -555,10 +613,12 @@ void wm_ptrarray_free(PtrArray *arr)
 {
     // DEBUG_PRINT("%s\n", __func__);
     assert(arr);
+    RETURN_IF_NULL(arr->ptrs);
 
     arr->capacity = 0;
     arr->size = 0;
     free(arr->ptrs);
+    arr->ptrs = NULL;
 }
 
 TreeNode* wm_treenode_ptr_find_focused_client_node(TreeNode *root)

src/util.h

@@ -68,11 +68,12 @@ void wm_treenode_split_space(TreeNode *node, Rect *ret1, Rect *ret2);
 void wm_treenode_recalculate_space(TreeNode *node);
 void wm_treenode_swap(TreeNode *root, TreeNode *node1, TreeNode* node2);
 TreeNode* wm_treenode_remove_client(Wm *wm, TreeNode *root, Client *client);
-void wm_treenode_remove_node(TreeNode *root, unsigned int node_id);
+void wm_treenode_remove_node(Wm *wm, TreeNode *root, TreeNode *node);
 int wm_get_node_index(TreeNode *parent, unsigned int node_id);
 void wm_tree_to_DOT(TreeNode *root, const char *filename);
 void wm_node_type_to_str(NodeType type, char *buf, size_t bufsize);
 char* wm_treenode_to_str(TreeNode *node);
+void wm_treenode_print(TreeNode *node);
 
 NodeArray wm_nodearray_new();
 void wm_nodearray_push(NodeArray *arr, TreeNode *node);