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GUAC-544: Implement reconnect via GuacUI.Client.connect() function. Can be called again to reinitialize the UI and reconnect.

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This commit is contained in:
Michael Jumper
2014-03-24 11:58:06 -07:00
parent 18369f277f
commit 7d56352876
2 changed files with 131 additions and 91 deletions
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76
guacamole/src/main/webapp/client.xhtml
View File

@@ -76,81 +76,7 @@
// Start connect after control returns from onload (allow browser
// to consider the page loaded).
window.onload = function() {
window.setTimeout(function() {
var tunnel;
// If WebSocket available, try to use it.
if (window.WebSocket)
tunnel = new Guacamole.ChainedTunnel(
new Guacamole.WebSocketTunnel("websocket-tunnel"),
new Guacamole.HTTPTunnel("tunnel")
);
// If no WebSocket, then use HTTP.
else
tunnel = new Guacamole.HTTPTunnel("tunnel");
// Instantiate client
var guac = new Guacamole.Client(tunnel);
// Add client to UI
guac.getDisplay().className = "software-cursor";
GuacUI.Client.display.appendChild(guac.getDisplay());
// Tie UI to client
GuacUI.Client.attach(guac);
// Calculate optimal width/height for display
var pixel_density = window.devicePixelRatio || 1;
var optimal_dpi = pixel_density * 96;
var optimal_width = window.innerWidth * pixel_density;
var optimal_height = window.innerHeight * pixel_density;
// Scale width/height to be at least 600x600
if (optimal_width < 600 || optimal_height < 600) {
var scale = Math.max(600 / optimal_width, 600 / optimal_height);
optimal_width = optimal_width * scale;
optimal_height = optimal_height * scale;
}
// Get entire query string, and pass to connect().
// Normally, only the "id" parameter is required, but
// all parameters should be preserved and passed on for
// the sake of authentication.
var connect_string =
window.location.search.substring(1)
+ "&width=" + Math.floor(optimal_width)
+ "&height=" + Math.floor(optimal_height)
+ "&dpi=" + Math.floor(optimal_dpi);
// Add audio mimetypes to connect_string
GuacUI.Audio.supported.forEach(function(mimetype) {
connect_string += "&audio=" + encodeURIComponent(mimetype);
});
// Add video mimetypes to connect_string
GuacUI.Video.supported.forEach(function(mimetype) {
connect_string += "&video=" + encodeURIComponent(mimetype);
});
// Show connection errors from tunnel
tunnel.onerror = function(status) {
var message = GuacUI.Client.tunnel_errors[status.code] || GuacUI.Client.tunnel_errors.DEFAULT;
GuacUI.Client.showError("Connection Error", message);
};
// Notify of disconnections (if not already notified of something else)
tunnel.onstatechange = function(state) {
if (state === Guacamole.Tunnel.State.CLOSED && !GuacUI.Client.visibleStatus)
GuacUI.Client.showStatus("Disconnected", "You have been disconnected. Reload the page to reconnect.");
};
// Connect
guac.connect(connect_string);
}, 0);
window.setTimeout(GuacUI.Client.connect, 0);
};
/* ]]> */ </script>

146
guacamole/src/main/webapp/scripts/client-ui.js
View File

@@ -828,16 +828,99 @@ GuacUI.Client.showError = function(title, status) {
GuacUI.Client.visibleStatus =
new GuacUI.Client.ModalStatus(title, status, "guac-error");
GuacUI.Client.visibleStatus.show();
}
};
/**
* Connects to the current Guacamole connection, attaching a new Guacamole
* client to the user interface. If a Guacamole client is already attached,
* it is replaced.
*/
GuacUI.Client.connect = function() {
var tunnel;
// If WebSocket available, try to use it.
if (window.WebSocket)
tunnel = new Guacamole.ChainedTunnel(
new Guacamole.WebSocketTunnel("websocket-tunnel"),
new Guacamole.HTTPTunnel("tunnel")
);
// If no WebSocket, then use HTTP.
else
tunnel = new Guacamole.HTTPTunnel("tunnel");
// Instantiate client
var guac = new Guacamole.Client(tunnel);
// Tie UI to client
GuacUI.Client.attach(guac);
// Calculate optimal width/height for display
var pixel_density = window.devicePixelRatio || 1;
var optimal_dpi = pixel_density * 96;
var optimal_width = window.innerWidth * pixel_density;
var optimal_height = window.innerHeight * pixel_density;
// Scale width/height to be at least 600x600
if (optimal_width < 600 || optimal_height < 600) {
var scale = Math.max(600 / optimal_width, 600 / optimal_height);
optimal_width = optimal_width * scale;
optimal_height = optimal_height * scale;
}
// Get entire query string, and pass to connect().
// Normally, only the "id" parameter is required, but
// all parameters should be preserved and passed on for
// the sake of authentication.
var connect_string =
window.location.search.substring(1)
+ "&width=" + Math.floor(optimal_width)
+ "&height=" + Math.floor(optimal_height)
+ "&dpi=" + Math.floor(optimal_dpi);
// Add audio mimetypes to connect_string
GuacUI.Audio.supported.forEach(function(mimetype) {
connect_string += "&audio=" + encodeURIComponent(mimetype);
});
// Add video mimetypes to connect_string
GuacUI.Video.supported.forEach(function(mimetype) {
connect_string += "&video=" + encodeURIComponent(mimetype);
});
// Show connection errors from tunnel
tunnel.onerror = function(status) {
var message = GuacUI.Client.tunnel_errors[status.code] || GuacUI.Client.tunnel_errors.DEFAULT;
GuacUI.Client.showError("Connection Error", message);
};
// Notify of disconnections (if not already notified of something else)
tunnel.onstatechange = function(state) {
if (state === Guacamole.Tunnel.State.CLOSED && !GuacUI.Client.visibleStatus)
GuacUI.Client.showStatus("Disconnected", "You have been disconnected. Reload the page to reconnect.");
};
// Connect
guac.connect(connect_string);
};
/**
* Attaches a Guacamole.Client to the client UI, such that Guacamole events
* affect the UI, and local events affect the Guacamole.Client.
* affect the UI, and local events affect the Guacamole.Client. If a client
* is already attached, it is replaced.
*
* @param {Guacamole.Client} guac The Guacamole.Client to attach to the UI.
*/
GuacUI.Client.attach = function(guac) {
// If a client is already attached, ensure it is disconnected
if (GuacUI.Client.attachedClient)
GuacUI.Client.attachedClient.disconnect();
// Store attached client
GuacUI.Client.attachedClient = guac;
@@ -850,7 +933,7 @@ GuacUI.Client.attach = function(guac) {
guac.onresize = function(width, height) {
GuacUI.Client.updateDisplayScale();
}
};
/*
* Update UI when the state of the Guacamole.Client changes.
@@ -1054,6 +1137,21 @@ GuacUI.Client.attach = function(guac) {
};
// Hide any existing status notifications
GuacUI.Client.hideStatus();
// Remove old client from UI, if any
GuacUI.Client.display.innerHTML = "";
// Add client to UI
guac.getDisplay().className = "software-cursor";
GuacUI.Client.display.appendChild(guac.getDisplay());
};
// One-time UI initialization
(function() {
/*
* Route document-level keyboard events to the client.
*/
@@ -1063,6 +1161,10 @@ GuacUI.Client.attach = function(guac) {
keyboard.onkeydown = function (keysym) {
// Only handle key events if client is attached
var guac = GuacUI.Client.attachedClient;
if (!guac) return;
// Handle Ctrl-shortcuts specifically
if (keyboard.modifiers.ctrl && !keyboard.modifiers.alt && !keyboard.modifiers.shift) {
@@ -1086,25 +1188,30 @@ GuacUI.Client.attach = function(guac) {
guac.sendKeyEvent(1, keysym);
// If key is NOT one of the expected keys, gesture not possible
if (keysym != 0xFFE3 && keysym != 0xFFE9 && keysym != 0xFFE1)
if (keysym !== 0xFFE3 && keysym !== 0xFFE9 && keysym !== 0xFFE1)
show_keyboard_gesture_possible = false;
};
keyboard.onkeyup = function (keysym) {
// Only handle key events if client is attached
var guac = GuacUI.Client.attachedClient;
if (!guac) return;
guac.sendKeyEvent(0, keysym);
// If lifting up on shift, toggle keyboard if rest of gesture
// conditions satisfied
if (show_keyboard_gesture_possible && keysym == 0xFFE1) {
if (show_keyboard_gesture_possible && keysym === 0xFFE1) {
if (keyboard.pressed[0xFFE3] && keyboard.pressed[0xFFE9]) {
// If in INTERACTIVE mode, switch to OSK
if (GuacUI.StateManager.getState() == GuacUI.Client.states.INTERACTIVE)
if (GuacUI.StateManager.getState() === GuacUI.Client.states.INTERACTIVE)
GuacUI.StateManager.setState(GuacUI.Client.states.OSK);
// If in OSK mode, switch to INTERACTIVE
else if (GuacUI.StateManager.getState() == GuacUI.Client.states.OSK)
else if (GuacUI.StateManager.getState() === GuacUI.Client.states.OSK)
GuacUI.StateManager.setState(GuacUI.Client.states.INTERACTIVE);
}
@@ -1140,7 +1247,8 @@ GuacUI.Client.attach = function(guac) {
// Set remote clipboard contents on paste
document.body.addEventListener("paste", function handle_paste(e) {
e.preventDefault();
guac.setClipboard(e.clipboardData.getData("text/plain"));
if (GuacUI.Client.attachedClient)
GuacUI.Client.attachedClient.setClipboard(e.clipboardData.getData("text/plain"));
}, false);
/*
@@ -1149,7 +1257,9 @@ GuacUI.Client.attach = function(guac) {
window.onunload = function() {
GuacUI.Client.updateThumbnail();
guac.disconnect();
if (GuacUI.Client.attachedClient)
GuacUI.Client.attachedClient.disconnect();
};
@@ -1162,15 +1272,17 @@ GuacUI.Client.attach = function(guac) {
var width = window.innerWidth * pixel_density;
var height = window.innerHeight * pixel_density;
guac.sendSize(width, height);
if (GuacUI.Client.attachedClient)
GuacUI.Client.attachedClient.sendSize(width, height);
GuacUI.Client.updateDisplayScale();
};
GuacUI.sessionState.onchange = function(old_state, new_state, name) {
if (name == "clipboard")
guac.setClipboard(new_state[name]);
else if (name == "auto-fit")
if (name === "clipboard" && GuacUI.Client.attachedClient)
GuacUI.Client.attachedClient.setClipboard(new_state[name]);
else if (name === "auto-fit")
GuacUI.Client.updateDisplayScale();
};
@@ -1213,7 +1325,7 @@ GuacUI.Client.attach = function(guac) {
GuacUI.Client.display.addEventListener('touchstart', function(e) {
// Record touch location
if (e.touches.length == 1) {
if (e.touches.length === 1) {
var touch = e.touches[0];
long_press_start_x = touch.screenX;
long_press_start_y = touch.screenY;
@@ -1353,6 +1465,9 @@ GuacUI.Client.attach = function(guac) {
e.preventDefault();
e.stopPropagation();
// Ignore file drops if no attached client
if (!GuacUI.Client.attachedClient) return;
// Upload each file
var files = e.dataTransfer.files;
for (var i=0; i<files.length; i++)
@@ -1360,5 +1475,4 @@ GuacUI.Client.attach = function(guac) {
}, false);
};
})();