Added editing function for pages (using tinymce).

Added editing pages for footer, banner, aside.
Added page overview.
Added public page.
Added settings page.
Added generator for embed pseudocodes.

edit/page.php

@@ -12,13 +12,70 @@ require_once __DIR__ . "/inc/functions.php";
 ensureEnvironment();            // Ensure existence of system files.
 $translations = loadLanguage(); // Load translations.
 ensureBackendEnv();             // Ensure session is started etc.
+$pages = loadPages();           // Load overview of pages.
+
+/*
+ * Load contents
+ */
+
+// Check for vars.
+loadHttpToGlobals(["id", "task", "title", "content", "higher", "public"]);
+if (isset($task) and !isset($public)) $public = false;
+
+// Load from ID
+
+if (isset($id) and is_numeric($id) and $id) {
+
+    $existent = json_decode(file_get_contents(__DIR__ . "/../data/static/$id.json"), true);
+    foreach (["title", "content", "higher", "public"] as $var) {
+        if (!isset($$var) and isset($existent[$var])) $$var = $existent[$var];
+    }
+
+}
+
+// Set page title
+
+if (!isset($id)) $pageTitle = $translations['newPage'];
+else $pageTitle = $translations['edit'] . ': ' . $title;
+
+/*
+ * Store if need be
+ */
+if (isset($task)) {
+
+    if ($task == "update") {
+
+        if (!isset($title)) $title = "";
+        if (!isset($content)) $content = "";
+        if (!isset($higher) or !is_numeric($higher)) $higher = "0";
+        if (!isset($id)) $id = "0";
+
+        $targetID = storePage($pages, ["title" => (string)$title, "content" => (string)$content, "higher" => $higher, "public" => (bool)$public], (int)$id);
+        header('Location: page.php?id=' . $targetID);
+
+    }
+
+    else if ($task == "delete") {
+
+        if (isset($id)) {
+            echo printErrorPage($translations['specifyToDelete']); return;
+        }
+
+        unlink(__DIR__ . "/../data/static/$id.json");
+        generateStaticPgCaches();
+    }
+
+}
+
 
 /*
  * Output
  */
 
-echo printBackendHead($translations['start']);
-echo printBackendHeader($translations['start'], $translations['helpStart']);
+if (!isset($public)) $public = false;
+
+echo printBackendHead($pageTitle, $pageTitle, $settings['logo']);
+echo printBackendHeader($pageTitle, $translations['helpSinglePage']);
 
 echo '
 <div id="mainWrapper">
@@ -27,13 +84,104 @@ echo '
 echo printBackendNav($translations);
 
 echo '
-    <main>';
+    <main class="noPadding">
+    <form action="" method="POST" class="withAside">
 
+        <section id="inputSection">
+            <input type="text" name="title" class="h1Input" placeholder="' . $translations['staticPageTitle'] . '"';
+if (isset($title)) echo " value='$title'";
+echo ' required />
+            <textarea type="text" name="content" id="pageContent" class="mceEditor" placeholder="' . $translations['staticPageTitle'] . '" required>';
+if (isset($content)) echo $content;
+echo '
+            </textarea>
+        </section>
 
+        <aside>
+
+            <div id="staticPageOptions">
+
+                <!-- Public or draft -->
+
+                <span class="labelLine">
+                    <label for="public">' . $translations['staticPagePublic'] . '</label>
+                    ' . generateHelpToolTip("helpPublic", $translations['staticPagePublic'], $translations['helpStaticPagePublic']) . '
+                </span>
+
+                <span>
+                    <label class="switch">
+                        <input name="public" id="public" type="checkbox"'; if (isset($public) and $public) echo " checked"; echo '>
+                        <span class="slider round"></span>
+                    </label>
+                </span>
+
+                <!-- Determine hierarchy -->
+
+                <span class="labelLine">
+                    <label for="higher">' . $translations['staticPageHigher'] . '</label>
+                    ' . generateHelpToolTip("helpHigher", $translations['staticPageHigher'], $translations['helpStaticPageHigher']) . '
+                </span>
+
+                <span>
+                    <select name="higher" id="higher">
+                        <option value="0"></option>';
+foreach ($pages as $page) {
+    echo '<option value="' . $page['id'] . '"';
+    if (isset($higher) and $page['id'] == $higher) echo " selected";
+    echo '>' . $page['title'] . '</option>';
+}
+echo '
+                    </select>
+                </span>
+
+                <span>
+                    <button type="submit">' . $translations['submit'] . '</button>
+                    ' . printHiddenInputs(["task" => "update"]) . '
+                </span>
+
+            </div>
+
+            <div id="pageTools">
+
+                <h3>' . $translations['tools'] . '</h3>
+
+                <div id="embedGenerator">
+
+                </div>
+';
+
+if (isset($id)) {
+    echo '
+                <div>
+                    <a href="../?id=' . $id . '&preview=1" class="buttonLike">' . $translations['preview'] . '</a>';
+
+    // Check if there is a page subordinate to the current one.
+    $hasSubordinate = false;
+    foreach ($pages as $page) {
+        if ($page['higher'] == $id) $hasSubordinate = true;
+    }
+
+    if (!$hasSubordinate) echo '
+                    <a href="page.php?id=' . $id . '&task=delete" class="buttonLike">' . $translations['delete'] . '</a>';
+    echo '
+                </div>
+    ';
+}
 
 echo '
+            </div>
+
+        </aside>
+
+    </form>
     </main>
-</div>';
+</div>
+
+
+    <script src="./js/tinymce471/js/tinymce/tinymce.min.js"></script>
+    <script type="text/javascript" src="./js/runTinyMCE.js"></script>
+
+';
 
 echo printBackendEnd();