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Intellij IDEA Plugin DEV (七)

 1 year ago
source link: https://dong4j.github.io/views/tools/2019/03171253.html#%E6%80%8E%E4%B9%88%E5%88%A4%E6%96%AD%E9%80%89%E4%B8%AD%E7%9A%84%E5%AF%B9%E8%B1%A1%E6%98%AF-markdown-%E6%96%87%E4%BB%B6
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Intellij IDEA Plugin DEV (七)


dong4j 3/17/2019 IDEA

介绍IDEA Plugin 开发入口

接下的文档都会根据前一篇的需求来找到解决方案, 对于不熟悉 IDEA 插件开发的同学(说的就是我), 可能一时找不到各个公共的入口, 这个是否就要看一些开源的插件, 从中找到功能入口.

# 右键菜单入口

需求中提到 「在编辑视图中直接右键 --> upload to Aliyun OSS

因此我们需要扩展右键菜单, 来添加我们自己的功能入口.

现在介绍一种新的添加 AnAction 的方式:

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这么多 Group. 好了, 懵逼了....

那么我们怎么来找我们需要的 Group 呢? 我这里用个笨办法, 看别人的插件配置呗, 这里通过看 Alibaba Java Coding Guidelines 这个插件的配置, 可以确定的有:

MainToolBar

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ProjectViewPopupMenu

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ChangesViewPopupMenu

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EditorPopupMenu

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先来第一个, 在编辑器右键菜单中添加我们的 action, 很明显是用 EditorPopupMenu

<action id="info.dong4j.aliyun-oss-upload" class="info.dong4j.test.AliyunOssUpload" text="upload aliyun oss"
        description="上传文件到 aliyun OSS">
    <add-to-group group-id="GenerateGroup" anchor="last"/>
</action>

<action id="AliObjectStorageServiceAction" class="info.dong4j.idea.plugin.action.AliObjectStorageServiceAction"
        popup="true" text="upload to Aliyun OSS">
    <add-to-group group-id="MainToolBar" anchor="last"/>
    <add-to-group group-id="ProjectViewPopupMenu" anchor="last"/>
    <add-to-group group-id="ChangesViewPopupMenu" anchor="last"/>
    <add-to-group group-id="EditorPopupMenu" anchor="last"/>
</action>

<group popup="true" id="com.alibaba.p3c.analytics.action_group" text="Aliyun OSS">
    <reference ref="AliObjectStorageServiceAction"/>
    <add-to-group group-id="ToolsMenu" anchor="last"/>
</group>
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不出意外的话:

MainToolBar

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ProjectViewPopupMenu

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EditorPopupMenu

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# 功能实现

由于需求实现不是本教程的重点, 所以会选取插件开发有关的问题作出说明.

# 怎么判断选中的对象是 Markdown 文件

首先我们得知道当前光标选中的是什么东西

// 获取当前操作的文件
PsiFile psiFile = anActionEvent.getData(CommonDataKeys.PSI_FILE);
if (psiFile != null) {
    log.info("language = {}", psiFile.getOriginalFile().getLanguage());
    log.info("name = {}", psiFile.getOriginalFile().getName());
    Messages.showMessageDialog(project, psiFile.getFileType().getName(), "File Type", null);
}
//获取当前事件触发时, 光标所在的元素
PsiElement psiElement = anActionEvent.getData(LangDataKeys.PSI_ELEMENT);
//如果光标选择的不是类, 弹出对话框提醒
if (psiElement == null || !(psiElement instanceof PsiClass)) {
    Messages.showMessageDialog(project, "Please focus on a class", "Generate Failed", null);
    return;
}
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2019-03-12 18:16:00,899 [  44799]   INFO - .AliObjectStorageServiceAction - language = Language: JAVA 
2019-03-12 18:16:00,899 [  44799]   INFO - .AliObjectStorageServiceAction - name = HelloOSS.java 
2019-03-12 18:16:10,423 [  54323]   INFO - .AliObjectStorageServiceAction - project's base path = /Users/dong4j/Develop/codes/alibaba/aliyun-oss-java-sdk-demo-mvn 
2019-03-12 18:16:14,372 [  58272]   INFO - .AliObjectStorageServiceAction - language = Language: TEXT 
2019-03-12 18:16:14,372 [  58272]   INFO - .AliObjectStorageServiceAction - name = maven-demo.iml 
2019-03-12 18:18:06,392 [ 170292]   INFO - .AliObjectStorageServiceAction - language = Language: TEXT 
2019-03-12 18:18:06,392 [ 170292]   INFO - .AliObjectStorageServiceAction - name = 3-2-data-grip.md 
2019-03-12 18:18:08,586 [ 172486]   INFO - .AliObjectStorageServiceAction - project's base path = /Users/dong4j/Develop/knowledge 
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psiFile 还有其他的一些属性, 这个就 debug 看吧.

从上面我们知道了, 如果是 Markdown 文件, Language 为 TEXT, name 是文件名. 如果是类文件, 则是 JAVA. 可以使用 PsiJavaFile 来操作.

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EBE0BC3B-E84A-4FFC-BBF0-E554EA451

# 获取 Markdown 文件的所有内容

String text = Objects.requireNonNull(psiFile.getViewProvider().getDocument()).getText();

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# update

👉 判断按钮什么时候可用


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