2019-09-27 17:05:34 +00:00
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package eu.faircode.email;
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import android.graphics.Typeface;
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import android.text.SpannableString;
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import android.text.Spanned;
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import android.text.style.ForegroundColorSpan;
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2019-09-29 10:10:19 +00:00
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import android.text.style.ImageSpan;
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2019-09-27 17:05:34 +00:00
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import android.text.style.RelativeSizeSpan;
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import android.text.style.StyleSpan;
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import android.text.style.URLSpan;
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import android.text.style.UnderlineSpan;
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import android.widget.EditText;
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import java.util.ArrayList;
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import java.util.List;
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public class StyleHelper {
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static boolean apply(int action, EditText etBody, Object... args) {
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Log.i("Style action=" + action);
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try {
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int start = etBody.getSelectionStart();
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int end = etBody.getSelectionEnd();
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if (start < 0)
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start = 0;
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if (end < 0)
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end = 0;
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if (start > end) {
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int tmp = start;
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start = end;
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end = tmp;
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}
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SpannableString ss = new SpannableString(etBody.getText());
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switch (action) {
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case R.id.menu_bold:
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case R.id.menu_italic: {
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int style = (action == R.id.menu_bold ? Typeface.BOLD : Typeface.ITALIC);
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boolean has = false;
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for (StyleSpan span : ss.getSpans(start, end, StyleSpan.class))
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if (span.getStyle() == style) {
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has = true;
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ss.removeSpan(span);
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}
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if (!has)
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ss.setSpan(new StyleSpan(style), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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etBody.setText(ss);
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etBody.setSelection(start, end);
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return true;
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}
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case R.id.menu_underline: {
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boolean has = false;
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for (UnderlineSpan span : ss.getSpans(start, end, UnderlineSpan.class)) {
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has = true;
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ss.removeSpan(span);
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}
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if (!has)
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ss.setSpan(new UnderlineSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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etBody.setText(ss);
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etBody.setSelection(start, end);
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return true;
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}
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case R.id.menu_size: {
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RelativeSizeSpan[] spans = ss.getSpans(start, end, RelativeSizeSpan.class);
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float size = (spans.length > 0 ? spans[0].getSizeChange() : 1.0f);
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// Match small/big
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if (size == 0.8f)
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size = 1.0f;
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else if (size == 1.0)
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size = 1.25f;
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else
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size = 0.8f;
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for (RelativeSizeSpan span : spans)
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ss.removeSpan(span);
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if (size != 1.0f)
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ss.setSpan(new RelativeSizeSpan(size), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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etBody.setText(ss);
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etBody.setSelection(start, end);
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return true;
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}
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case R.id.menu_color: {
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for (ForegroundColorSpan span : ss.getSpans(start, end, ForegroundColorSpan.class))
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ss.removeSpan(span);
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ss.setSpan(new ForegroundColorSpan((int) args[0]), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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etBody.setText(ss);
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etBody.setSelection(start, end);
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return true;
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}
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case R.id.menu_link: {
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2019-12-29 12:13:52 +00:00
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String url = (String) args[0];
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2019-09-27 17:05:34 +00:00
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List<Object> spans = new ArrayList<>();
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for (Object span : ss.getSpans(start, end, Object.class)) {
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if (!(span instanceof URLSpan))
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spans.add(span);
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ss.removeSpan(span);
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}
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2020-03-26 19:52:03 +00:00
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if (url != null) {
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if (start == end) {
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etBody.getText().insert(start, url);
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end += url.length();
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ss = new SpannableString(etBody.getText());
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}
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2019-12-29 12:13:52 +00:00
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2020-03-26 19:52:03 +00:00
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ss.setSpan(new URLSpan(url), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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2019-09-27 17:05:34 +00:00
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2020-03-26 19:52:03 +00:00
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// Restore other spans
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2019-09-27 17:05:34 +00:00
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for (Object span : spans)
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ss.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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etBody.setText(ss);
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etBody.setSelection(end, end);
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return true;
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}
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2019-09-29 10:10:19 +00:00
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case R.id.menu_clear: {
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boolean selected = (start != end);
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if (start == end) {
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start = 0;
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end = etBody.length();
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}
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for (Object span : ss.getSpans(start, end, Object.class))
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if (!(span instanceof ImageSpan))
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ss.removeSpan(span);
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etBody.setText(ss);
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if (selected)
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etBody.setSelection(start, end);
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return true;
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}
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2019-09-27 17:05:34 +00:00
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default:
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return false;
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}
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} catch (Throwable ex) {
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Log.e(ex);
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return false;
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}
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}
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}
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