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Update sample-custome-extension to use plugin

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This commit is contained in:
Dimitry Ivanov 2018-12-02 15:32:41 +03:00
parent f97c852c8a
commit 6a82b75aba
3 changed files with 73 additions and 114 deletions
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58
sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconPlugin.java Normal file
View File

@ -0,0 +1,58 @@
package ru.noties.markwon.sample.extension;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import org.commonmark.parser.Parser;
import ru.noties.markwon.AbstractMarkwonPlugin;
import ru.noties.markwon.MarkwonVisitor;
public class IconPlugin extends AbstractMarkwonPlugin {
@NonNull
public static IconPlugin create(@NonNull IconSpanProvider iconSpanProvider) {
return new IconPlugin(iconSpanProvider);
}
private final IconSpanProvider iconSpanProvider;
IconPlugin(@NonNull IconSpanProvider iconSpanProvider) {
this.iconSpanProvider = iconSpanProvider;
}
@Override
public void configureParser(@NonNull Parser.Builder builder) {
builder.customDelimiterProcessor(IconProcessor.create());
}
@Override
public void configureVisitor(@NonNull MarkwonVisitor.Builder builder) {
builder.on(IconNode.class, new MarkwonVisitor.NodeVisitor<IconNode>() {
@Override
public void visit(@NonNull MarkwonVisitor visitor, @NonNull IconNode iconNode) {
final String name = iconNode.name();
final String color = iconNode.color();
final String size = iconNode.size();
if (!TextUtils.isEmpty(name)
&& !TextUtils.isEmpty(color)
&& !TextUtils.isEmpty(size)) {
final int length = visitor.length();
visitor.builder().append(name);
visitor.setSpans(length, iconSpanProvider.provide(name, color, size));
visitor.builder().append(' ');
}
}
});
}
@NonNull
@Override
public String processMarkdown(@NonNull String markdown) {
return IconProcessor.prepare(markdown);
}
}

62
sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/IconVisitor.java
View File

@ -1,62 +0,0 @@
package ru.noties.markwon.sample.extension;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import org.commonmark.node.CustomNode;
import ru.noties.markwon.SpannableBuilder;
import ru.noties.markwon.MarkwonConfiguration;
import ru.noties.markwon.renderer.SpannableMarkdownVisitor;
@SuppressWarnings("WeakerAccess")
public class IconVisitor extends SpannableMarkdownVisitor {
private final SpannableBuilder builder;
private final IconSpanProvider iconSpanProvider;
public IconVisitor(
@NonNull MarkwonConfiguration configuration,
@NonNull SpannableBuilder builder,
@NonNull IconSpanProvider iconSpanProvider
) {
super(configuration, builder);
this.builder = builder;
this.iconSpanProvider = iconSpanProvider;
}
@Override
public void visit(CustomNode customNode) {
if (!visitIconNode(customNode)) {
super.visit(customNode);
}
}
private boolean visitIconNode(@NonNull CustomNode customNode) {
if (customNode instanceof IconNode) {
final IconNode node = (IconNode) customNode;
final String name = node.name();
final String color = node.color();
final String size = node.size();
if (!TextUtils.isEmpty(name)
&& !TextUtils.isEmpty(color)
&& !TextUtils.isEmpty(size)) {
final int length = builder.length();
builder.append(name);
builder.setSpan(iconSpanProvider.provide(name, color, size), length);
builder.append(' ');
return true;
}
}
return false;
}
}

67
sample-custom-extension/src/main/java/ru/noties/markwon/sample/extension/MainActivity.java
View File

@ -3,19 +3,12 @@ package ru.noties.markwon.sample.extension;
import android.app.Activity;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.widget.TextView;
import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension;
import org.commonmark.ext.gfm.tables.TablesExtension;
import org.commonmark.node.Node;
import org.commonmark.parser.Parser;
import java.util.Arrays;
import ru.noties.markwon.MarkwonConfiguration;
import ru.noties.markwon.SpannableBuilder;
import ru.noties.markwon.AbstractMarkwonPlugin;
import ru.noties.markwon.Markwon;
import ru.noties.markwon.spans.MarkwonTheme;
import ru.noties.markwon.tasklist.TaskListExtension;
public class MainActivity extends Activity {
@ -27,49 +20,19 @@ public class MainActivity extends Activity {
final TextView textView = findViewById(R.id.text_view);
// obtain an instance of parser
final Parser parser = new Parser.Builder()
// we will register all known to Markwon extensions
.extensions(Arrays.asList(
StrikethroughExtension.create(),
TablesExtension.create(),
TaskListExtension.create()
))
// this is the handler for custom icons
.customDelimiterProcessor(IconProcessor.create())
final Markwon markwon = Markwon.builder(this)
.use(IconPlugin.create(IconSpanProvider.create(this, 0)))
.use(new AbstractMarkwonPlugin() {
@Override
public void configureTheme(@NonNull MarkwonTheme.Builder builder) {
final float[] textSizeMultipliers = new float[]{3f, 2f, 1.5f, 1f, .5f, .25f};
builder
.headingTypeface(Typeface.MONOSPACE)
.headingTextSizeMultipliers(textSizeMultipliers);
}
})
.build();
// we process input to wrap icon definitions with `@` on both ends
// if your input already does it, there is not need for `IconProcessor.prepare()` call.
final String markdown = IconProcessor.prepare(getString(R.string.input));
final Node node = parser.parse(markdown);
final SpannableBuilder builder = new SpannableBuilder();
// please note that here I am passing `0` as fallback it means that if toMarkdown references
// unknown icon, it will try to load fallback one and will fail with ResourceNotFound. It's
// better to provide a valid fallback option
final IconSpanProvider spanProvider = IconSpanProvider.create(this, 0);
final float[] textSizeMultipliers = new float[]{3f, 2f, 1.5f, 1f, .5f, .25f};
MarkwonConfiguration configuration = MarkwonConfiguration.builder(this)
.theme(MarkwonTheme.builder()
.headingTypeface(Typeface.MONOSPACE)
.headingTextSizeMultipliers(textSizeMultipliers)
.build())
.build();
// create an instance of visitor to process parsed toMarkdown
final IconVisitor visitor = new IconVisitor(
configuration,
builder,
spanProvider
);
// trigger visit
node.accept(visitor);
// apply
textView.setText(builder.text());
markwon.setMarkdown(textView, getString(R.string.input));
}
}