fixes #2243

app/assets/javascripts/default/utility.js

@@ -0,0 +1,123 @@
+(function() {
+  Danbooru.meta = function(key) {
+    return $("meta[name=" + key + "]").attr("content");
+  }
+
+  Danbooru.scrolling = false;
+
+  Danbooru.scroll_to = function(element) {
+    if (Danbooru.scrolling) {
+      return;
+    } else {
+      Danbooru.scrolling = true;
+    }
+
+    var top = null;
+    if (typeof(element) === "number") {
+      top = element;
+    } else {
+      top = element.offset().top - 10;
+    }
+    $('html, body').animate({scrollTop: top}, 300, "linear", function() {Danbooru.scrolling = false;});
+  }
+
+  Danbooru.notice_timeout_id = undefined;
+
+  Danbooru.notice = function(msg, permanent) {
+    $('#notice').addClass("ui-state-highlight").removeClass("ui-state-error").fadeIn("fast").children("span").html(msg);
+
+    if (Danbooru.notice_timeout_id !== undefined) {
+      clearTimeout(Danbooru.notice_timeout_id)
+    }
+    if (!permanent) {
+      Danbooru.notice_timeout_id = setTimeout(function() {
+        $("#close-notice-link").click();
+        Danbooru.notice_timeout_id = undefined;
+      }, 6000);
+    }
+  }
+
+  Danbooru.error = function(msg) {
+    $('#notice').removeClass("ui-state-highlight").addClass("ui-state-error").fadeIn("fast").children("span").html(msg);
+
+    if (Danbooru.notice_timeout_id !== undefined) {
+      clearTimeout(Danbooru.notice_timeout_id)
+    }
+  }
+
+  Danbooru.is_subset = function(array, subarray) {
+    var all = true;
+
+    $.each(subarray, function(i, val) {
+      if ($.inArray(val, array) === -1) {
+        all = false;
+      }
+    });
+
+    return all;
+  }
+
+  Danbooru.intersect = function(a, b) {
+    a = a.slice(0).sort();
+    b = b.slice(0).sort();
+    var result = [];
+    while (a.length > 0 && b.length > 0)
+    {
+      if (a[0] < b[0]) {
+        a.shift();
+      } else if (a[0] > b[0]) {
+        b.shift();
+      } else {
+        result.push(a.shift());
+        b.shift();
+      }
+    }
+    return result;
+  }
+
+  Danbooru.without = function(array, element) {
+    var temp = [];
+    $.each(array, function(i, v) {
+      if (v !== element) {
+        temp.push(v);
+      }
+    });
+    return temp;
+  }
+
+  Danbooru.reject = function(array, f) {
+    var filtered = [];
+    $.each(array, function(i, x) {
+      if (!f(x)) {
+        filtered.push(x);
+      }
+    });
+    return filtered;
+  }
+
+  Danbooru.regexp_escape = function(string) {
+    return string.replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
+  }
+
+  $.fn.selectRange = function(start, end) {
+    return this.each(function() {
+      if (this.setSelectionRange) {
+        this.focus();
+        this.setSelectionRange(start, end);
+      } else if (this.createTextRange) {
+        var range = this.createTextRange();
+        range.collapse(true);
+        range.moveEnd('character', end);
+        range.moveStart('character', start);
+        range.select();
+      }
+    });
+  };
+
+  $.fn.selectEnd = function(){
+    if (this.length) {
+      this.selectRange(this.val().length, this.val().length);
+    }
+    return this;
+  }
+})();