更新3 最终工作代码如下。您需要 src 文件夹中的 ace.js!它无法从库中运行,您需要从他们的网站获得预打包版本。
WText *editor = new WText(root());
editor->setText("function(){\n hello.abc();\n}\n");
editor->setInline(false);
上面的代码可以设置ACE窗口的内容。
MyClass::MyClass(const WEnvironment& env)
: WApplication(env)
{
wApp->require("ace-builds/src/ace.js");
// A WContainerWidget is rendered as a div
WContainerWidget *editor = new WContainerWidget(root());
editor->resize(500, 500);
std::string editor_ref = editor->jsRef(); // is a text string that will be the element when executed in JS
std::string command =
editor_ref + ".editor = ace.edit(" + editor_ref + ");" +
editor_ref + ".editor.setTheme(\"ace/theme/monokai\");" +
editor_ref + ".editor.getSession().setMode(\"ace/mode/javascript\");";
editor->doJavaScript(command);
JSignal <std::string> *jsignal = new JSignal<std::string>(editor, "textChanged");
jsignal->connect(this, &MyClass::textChanged);
WPushButton *b = new WPushButton("Save", root());
command = "function(object, event) {" +
jsignal->createCall(editor_ref + ".editor.getValue()") +
";}";
b->clicked().connect(command);
}
void MyClass::textChanged(std::string incoming)
{
}
更新2 这是我的项目看起来像 atm 的样子,仍然是白色屏幕,右上角有来自 WT 的红色“正在加载...”消息。更多注释如下。
MyClass::MyClass(const WEnvironment& env)
: WApplication(env)
{
wApp->require("lib/ace/ace.js");
// A WContainerWidget is rendered as a div
WContainerWidget *editor = new WContainerWidget(root());
editor->resize(500, 500);
std::string editor_ref = editor->jsRef(); // is a text string that will be the element when executed in JS
std::string command =
editor_ref + ".editor = ace.edit(" + editor_ref + ");" +
editor_ref + ".editor.setTheme(\"ace/theme/monokai\");" +
editor_ref + ".editor.getSession().setMode(\"ace/mode/javascript\");";
editor->doJavaScript(command);
JSignal <std::string> *jsignal = new JSignal<std::string>(editor, "textChanged");
jsignal->connect(this, &MyClass::textChanged);
WPushButton *b = new WPushButton("Save", root());
command = "function(object, event) {" +
jsignal->createCall(editor_ref + ".editor.getValue()") +
";}";
b->clicked().connect(command);
}
void MyClass::textChanged(std::string incoming)
{
}
“command”变量用于编辑器->doJavaScript(command)时等于以下内容
"Wt3_3_0.$('oy4ycjy').editor = ace.edit(Wt3_3_0.$('oy4ycjy'));Wt3_3_0.$('oy4ycjy').editor.setTheme('ace/theme/monokai');Wt3_3_0.$('oy4ycjy').editor.getSession().setMode('ace/mode/javascript');"
“command”变量用于 b->clicked().connect(command); 时等于以下内容
"function(object, event) {Wt.emit('oy4ycjy','textChanged',Wt3_3_0.$('oy4ycjy').editor.getValue());;}"
更新1
已将建议的代码添加到我的构造函数中,但是页面不会从纯白色屏幕更改。我在这个 WT 项目中没有做任何其他事情,只有这段代码正在运行。
wApp->require("lib/ace/ace.js");
// A WContainerWidget is rendered as a div
WContainerWidget *editor = new WContainerWidget(root());
std::string editor_ref = editor->jsRef(); // is a text string that will be the element when executed in JS
editor->doJavaScript(
editor_ref + ".editor = ace.edit('" + editor_ref + "');" +
editor_ref + ".editor.setTheme('ace/theme/monokai');" +
editor_ref + ".editor.getSession().setMode('ace/mode/javascript');"
);
editor_ref 的值为“Wt3_3_0.$('oumvrgm')”减去引号。
还尝试添加下面的代码,页面仍然空白。
JSignal <std::string> *jsignal = new JSignal<std::string>(editor, "textChanged");
jsignal->connect(this, &MyClass::textChanged);
WPushButton *b = new WPushButton("Save", root());
b->clicked().connect("function(object, event) {" +
jsignal->createCall(editor->jsRef() + ".editor.getValue()") +
";}");
我还发现注释掉了
editor_ref + ".editor = ace.edit('" + editor_ref + "');" +
使按钮显示,但屏幕右上角有一个红色的“正在加载...”注释,因此 WT 正在等待某些内容。
我目前将 textChanged 作为一个不执行任何操作的函数。
原始帖子
所以,我的问题是这样的。我如何获得 ACE http://ace.ajax.org/#nav=about在WT http://www.webtoolkit.eu/wt 。更具体地说,在 WT Wt::WTextArea 或 Wt::WTabWidget 中的 ACE,文本区域将是首选。我已经尝试这样做几天了,但没有取得太大成功。
我已经能够将 ACE 嵌入到 HTML 页面中,没有任何问题,因为他们的网站说“只需将其复制并粘贴到您的页面中”,事实就是这么简单。但是,我需要通过 WT 在本地将其加载到容器中。我将他们的存储库从 GIT 下载到我的机器上并尝试使用
require("lib/ace/ace.js");
和
doJavaScript(...);
使用各种命令都没有成功...我在 Java 和 HTML 方面的能力不如 C++ 强,所以如果这涉及大量 Java/HTML,我会要求尽可能详细的信息。先谢谢各位 friend 了!
最佳答案
也许这会让您走向正确的方向:
wApp->require("lib/ace/ace.js")
// A WContainerWidget is rendered as a div
WContainerWidget *editor = new WContainerWidget(parent);
// editor->jsRef() is a text string that will be the element when executed in JS
editor->doJavaScript(
editor->jsRef() + ".editor = ace.edit(" + editor->jsRef() + ");" +
editor->jsRef() + ".editor.setTheme('ace/theme/monokai');" +
editor->jsRef() + ".editor.getSession().setMode('ace/mode/javascript');"
);
这应该装饰编辑器。 Wt 不会自动将对 div 的修改发送到服务器,因此您可以通过 JSignal 手动执行此操作(从 JS 向 C++ 发出信号):
JSignal <std::string> *jsignal = new JSignal<std::string>(editor, "textChanged");
jsignal->connect(this, MyClass::textChanged);
WPushButton *b = new WPushButton("Save", parent);
b->clicked().connect("function(object, event) {" +
jsignal->createCall(editor->jsRef() + ".editor.getValue()") +
";}");
(上面的代码未经测试,因此您可能需要进行一些调整)
我已将 CodeMirror 集成到早期的 JWt (java) 项目中,如下所示:
import eu.webtoolkit.jwt.WApplication;
import eu.webtoolkit.jwt.WContainerWidget;
import eu.webtoolkit.jwt.WTextArea;
public class CodeMirrorTextArea extends WContainerWidget {
private WTextArea textArea;
public CodeMirrorTextArea(WContainerWidget parent) {
super(parent);
textArea = new WTextArea(this);
WApplication app = WApplication.getInstance();
app.require(app.resolveRelativeUrl("codemirror-2.32/lib/codemirror.js"));
app.require(app.resolveRelativeUrl("codemirror-2.32/mode/groovy/groovy.js"));
//TODO:
//We save the editor state to the text area on each key stroke,
//it appears to be not a performance issue,
//however it might very well become one when editing larger fragments of code.
//A better solution would be to save this state to the text area only when
//the form is submitted, currently this is not yet possible in Wt???.
String js =
"var e = " + textArea.getJsRef() + ";" +
"var cm = CodeMirror.fromTextArea(e, {" +
" onKeyEvent : function (editor, event) {" +
" editor.save();" +
" }," +
" lineNumbers: true" +
" });" +
"var self = " + getJsRef() + ";" +
"self.cm = cm;";
this.doJavaScript(js);
}
public CodeMirrorTextArea() {
this(null);
}
public void setText(String text) {
textArea.setText(text);
}
public String getText() {
return textArea.getText();
}
public void setMarker(int line, String htmlMarker) {
String js =
"var self = " + getJsRef() + ";" +
"self.cm.setMarker(" + line + ", " + jsStringLiteral(htmlMarker +
"%N%") + ");";
this.doJavaScript(js);
}
public void clearMarker(int line) {
String js =
"var self = " + getJsRef() + ";" +
"self.cm.clearMarker(" + line + ");";
this.doJavaScript(js);
}
}
关于java - 将 ACE 与 WT 结合使用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15832798/