Examples with RequestCallback com.google.gwt.http.client.RequestCallback used on opensource projects

Example 1 with RequestCallback

use of com.google.gwt.http.client.RequestCallback in project opentsdb by OpenTSDB.

the class QueryUi method asyncGetJson.

private void asyncGetJson(final String url, final GotJsonCallback callback) {
    final RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);
    try {
        builder.sendRequest(null, new RequestCallback() {

            public void onError(final Request request, final Throwable e) {
                displayError("Failed to get " + url + ": " + e.getMessage());
                // Since we don't call the callback we've been given, reset this
                // bit of state as we're not going to retry anything right now.
                pending_requests = 0;
            }

            public void onResponseReceived(final Request request, final Response response) {
                final int code = response.getStatusCode();
                if (code == Response.SC_OK) {
                    clearError();
                    callback.got(JSONParser.parse(response.getText()));
                    return;
                } else if (code >= Response.SC_BAD_REQUEST) {
                    // 400+ => Oops.
                    // Since we don't call the callback we've been given, reset this
                    // bit of state as we're not going to retry anything right now.
                    pending_requests = 0;
                    String err = response.getText();
                    // an error message.
                    if (!err.isEmpty() && err.charAt(0) == '{') {
                        final JSONValue json = JSONParser.parse(err);
                        final JSONObject result = json == null ? null : json.isObject();
                        final JSONValue jerr = result == null ? null : result.get("err");
                        final JSONString serr = jerr == null ? null : jerr.isString();
                        err = serr.stringValue();
                        // If the error message has multiple lines (which is common if
                        // it contains a stack trace), show only the first line and
                        // hide the rest in a panel users can expand.
                        final int newline = err.indexOf('\n', 1);
                        final String msg = "Request failed: " + response.getStatusText();
                        if (newline < 0) {
                            displayError(msg + ": " + err);
                        } else {
                            displayError(msg);
                            final DisclosurePanel dp = new DisclosurePanel(err.substring(0, newline));
                            // Attach the widget.
                            RootPanel.get("queryuimain").add(dp);
                            final InlineLabel content = new InlineLabel(err.substring(newline, err.length()));
                            // For readable stack traces.
                            content.addStyleName("fwf");
                            dp.setContent(content);
                            current_error.getElement().appendChild(dp.getElement());
                        }
                    } else {
                        displayError("Request failed while getting " + url + ": " + response.getStatusText());
                        // Since we don't call the callback we've been given, reset this
                        // bit of state as we're not going to retry anything right now.
                        pending_requests = 0;
                    }
                    graphstatus.setText("");
                }
            }
        });
    } catch (RequestException e) {
        displayError("Failed to get " + url + ": " + e.getMessage());
    }
}

Example 2 with RequestCallback

use of com.google.gwt.http.client.RequestCallback in project gerrit by GerritCodeReview.

the class Gerrit method getDocIndex.

private static void getDocIndex(final AsyncCallback<DocInfo> cb) {
    RequestBuilder req = new RequestBuilder(RequestBuilder.HEAD, GWT.getHostPageBaseURL() + INDEX);
    req.setCallback(new RequestCallback() {

        @Override
        public void onResponseReceived(Request req, Response resp) {
            switch(resp.getStatusCode()) {
                case Response.SC_OK:
                case Response.SC_MOVED_PERMANENTLY:
                case Response.SC_MOVED_TEMPORARILY:
                    cb.onSuccess(DocInfo.create());
                    break;
                default:
                    cb.onSuccess(null);
                    break;
            }
        }

        @Override
        public void onError(Request request, Throwable e) {
            cb.onFailure(e);
        }
    });
    try {
        req.send();
    } catch (RequestException e) {
        cb.onFailure(e);
    }
}

Example 3 with RequestCallback

use of com.google.gwt.http.client.RequestCallback in project opennms by OpenNMS.

the class Navigation method linkTopOpenNMSClicked.

@UiHandler("m_link")
public void linkTopOpenNMSClicked(ClickEvent event) {
    StringBuffer postData = new StringBuffer();
    // note param pairs are separated by a '&'
    // and each key-value pair is separated by a '='
    postData.append(URL.encode("j_username")).append("=").append(URL.encode("ipv6"));
    postData.append("&");
    postData.append(URL.encode("j_password")).append("=").append(URL.encode("ipv6"));
    postData.append("&");
    postData.append(URL.encode("Login")).append("=").append(URL.encode("login"));
    RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode("/opennms/j_spring_security_check"));
    builder.setHeader("Content-type", "application/x-www-form-urlencoded");
    try {
        builder.sendRequest(postData.toString(), new RequestCallback() {

            @Override
            public void onResponseReceived(Request request, Response response) {
                if (response.getStatusCode() == 200) {
                    Window.open("/opennms/index.jsp", "_target", null);
                } else {
                    Window.alert("Failed to login");
                }
            }

            @Override
            public void onError(Request request, Throwable exception) {
                Window.alert("Problem Logging in");
            }
        });
    } catch (RequestException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
// Window.alert("Cliking link to OpenNMS");
}

Example 4 with RequestCallback

use of com.google.gwt.http.client.RequestCallback in project blogwt by billy1380.

the class PageService method getPages.

public Request getPages(GetPagesRequest input, AsyncSuccess<GetPagesRequest, GetPagesResponse> onSuccess, AsyncFailure<GetPagesRequest> onFailure) {
    Request handle = null;
    try {
        handle = sendRequest(PageMethodGetPages, input, new RequestCallback() {

            @Override
            public void onResponseReceived(Request request, Response response) {
                try {
                    GetPagesResponse outputParameter = new GetPagesResponse();
                    parseResponse(response, outputParameter);
                    if (onSuccess != null) {
                        onSuccess.call(input, outputParameter);
                    }
                    onCallSuccess(PageService.this, PageMethodGetPages, input, outputParameter);
                } catch (JSONException | HttpException exception) {
                    if (onFailure != null) {
                        onFailure.call(input, exception);
                    }
                    onCallFailure(PageService.this, PageMethodGetPages, input, exception);
                }
            }

            @Override
            public void onError(Request request, Throwable exception) {
                if (onFailure != null) {
                    onFailure.call(input, exception);
                }
                onCallFailure(PageService.this, PageMethodGetPages, input, exception);
            }
        });
        onCallStart(PageService.this, PageMethodGetPages, input, handle);
    } catch (RequestException exception) {
        if (onFailure != null) {
            onFailure.call(input, exception);
        }
        onCallFailure(PageService.this, PageMethodGetPages, input, exception);
    }
    return handle;
}

Example 5 with RequestCallback

use of com.google.gwt.http.client.RequestCallback in project blogwt by billy1380.

the class PageService method submitForm.

public Request submitForm(SubmitFormRequest input, AsyncSuccess<SubmitFormRequest, SubmitFormResponse> onSuccess, AsyncFailure<SubmitFormRequest> onFailure) {
    Request handle = null;
    try {
        handle = sendRequest(PageMethodSubmitForm, input, new RequestCallback() {

            @Override
            public void onResponseReceived(Request request, Response response) {
                try {
                    SubmitFormResponse outputParameter = new SubmitFormResponse();
                    parseResponse(response, outputParameter);
                    if (onSuccess != null) {
                        onSuccess.call(input, outputParameter);
                    }
                    onCallSuccess(PageService.this, PageMethodSubmitForm, input, outputParameter);
                } catch (JSONException | HttpException exception) {
                    if (onFailure != null) {
                        onFailure.call(input, exception);
                    }
                    onCallFailure(PageService.this, PageMethodSubmitForm, input, exception);
                }
            }

            @Override
            public void onError(Request request, Throwable exception) {
                if (onFailure != null) {
                    onFailure.call(input, exception);
                }
                onCallFailure(PageService.this, PageMethodSubmitForm, input, exception);
            }
        });
        onCallStart(PageService.this, PageMethodSubmitForm, input, handle);
    } catch (RequestException exception) {
        if (onFailure != null) {
            onFailure.call(input, exception);
        }
        onCallFailure(PageService.this, PageMethodSubmitForm, input, exception);
    }
    return handle;
}