GUACAMOLE-352: Refactor Guacamole.Keyboard.InputSink to Guacamole.InputSink.

guacamole-common-js/src/main/webapp/modules/Keyboard.js

@@ -1412,112 +1412,3 @@ Guacamole.Keyboard.ModifierState.fromKeyboardEvent = function(e) {
     return state;
     
 };
-
-/**
- * A hidden input field which attempts to keep itself focused at all times,
- * except when another input field has been intentionally focused, whether
- * programatically or by the user. The actual underlying input field, returned
- * by getElement(), may be used as a reliable source of keyboard-related events,
- * particularly composition and input events which may require a focused input
- * field to be dispatched at all.
- *
- * @constructor
- */
-Guacamole.Keyboard.InputSink = function InputSink() {
-
-    /**
-     * Reference to this instance of Guacamole.Keyboard.InputSink.
-     *
-     * @private
-     * @type {Guacamole.Keyboard.InputSink}
-     */
-    var sink = this;
-
-    /**
-     * The underlying input field, styled to be invisible.
-     *
-     * @private
-     * @type {Element}
-     */
-    var field = document.createElement('textarea');
-    field.style.position   = 'fixed';
-    field.style.outline    = 'none';
-    field.style.border     = 'none';
-    field.style.margin     = '0';
-    field.style.padding    = '0';
-    field.style.height     = '0';
-    field.style.width      = '0';
-    field.style.left       = '0';
-    field.style.bottom     = '0';
-    field.style.resize     = 'none';
-    field.style.background = 'transparent';
-    field.style.color      = 'transparent';
-
-    // Keep field clear when modified via normal keypresses
-    field.addEventListener("keypress", function clearKeypress(e) {
-        field.value = '';
-    }, false);
-
-    // Keep field clear when modofied via composition events
-    field.addEventListener("compositionend", function clearCompletedComposition(e) {
-        if (e.data)
-            field.value = '';
-    }, false);
-
-    // Keep field clear when modofied via input events
-    field.addEventListener("input", function clearCompletedInput(e) {
-        if (e.data && !e.isComposing)
-            field.value = '';
-    }, false);
-
-    // Whenever focus is gained, automatically click to ensure cursor is
-    // actually placed within the field (the field may simply be highlighted or
-    // outlined otherwise)
-    field.addEventListener("focus", function focusReceived() {
-        window.setTimeout(function deferRefocus() {
-            field.click();
-            field.select();
-        }, 0);
-    }, true);
-
-    /**
-     * Attempts to focus the underlying input field. The focus attempt occurs
-     * asynchronously, and may silently fail depending on browser restrictions.
-     */
-    this.focus = function focus() {
-        window.setTimeout(function deferRefocus() {
-            field.focus(); // Focus must be deferred to work reliably across browsers
-        }, 0);
-    };
-
-    /**
-     * Returns the underlying input field. This input field MUST be manually
-     * added to the DOM for the Guacamole.Keyboard.InputSink to have any
-     * effect.
-     *
-     * @returns {Element}
-     */
-    this.getElement = function getElement() {
-        return field;
-    };
-
-    // Automatically refocus input sink if part of DOM
-    document.addEventListener("keydown", function refocusSink(e) {
-
-        // Do not refocus if focus is on an input field
-        var focused = document.activeElement;
-        if (focused && focused !== document.body) {
-
-            // Only consider focused input fields which are actually visible
-            var rect = focused.getBoundingClientRect();
-            if (rect.left + rect.width > 0 && rect.top + rect.height > 0)
-                return;
-
-        }
-
-        // Refocus input sink instead of handling click
-        sink.focus();
-
-    }, true);
-
-};